to class

To put things into groups by type or order

To tell how two things are different

To put people or things into groups based on shared features

To put things or people into groups by what they have in common

To put people and things together by type or purpose

To put things into groups and into the right order

To list things and write details about them

Put things into groups that are alike

To put people or things into the same group because they share a feature

To put things into groups to study them

To make people or animals move quickly in different directions

To make something lose its order or structure

To move into a better, more expensive class on a plane or train

People with moderate income and education who are not rich or poor

Of people or families with a moderate income and some education

Very high in quality and among the best in the world

People who do manual or factory work and earn hourly wages

Relates to people who do manual or factory jobs and earn wages

The most comfortable and expensive seats on a plane, train, or ship

Of the highest quality and very good

A lawsuit brought by some people for a larger group with similar claims

In the most comfortable and expensive way when you travel

A lesson where students learn to draw, paint or make sculptures

Conflict between rich and working people over money and power

Students who are in their last year of high school or college

A person who shows skill and style when things are difficult

Having higher than average income, education, and social position among the middle class

A group of students who finish their studies in the same year

A small group of people who control the government and have most money

A social group with the most money and power

A group of athletes with similar body weight in a sport to make matches fair

People with little money, education, or power in society

A group of students in their first year at a college or high school

Belonging to the richest and most powerful people in society

A group of people with similar money, jobs, or education

A student who makes classmates laugh by acting silly in class

A mail service that gives letters and small packages faster delivery

A school course where students learn hands-on skills like building things from wood or metal

Having a modest income and social position in the lower part of the middle class

A lawsuit started by one or more people for many others with the same problem

A school class where students learn how to care for their body, for example nutrition and personal hygiene

A fight between rich and poor groups over money and power

People who have little money, little education, or low social status

The cheapest part of a ship or train with basic seats and little comfort

A class taught by an expert for advanced students, often in music or art

A senior Army soldier who leads and trains other soldiers

A conflict between rich owners and workers over money and power

Cheaper seats or rooms on transport with fewer services than first class

The cheapest seats on a plane, train, or ship with basic services

The highest rank or grade given for very good work

A group of students in their second year at high school or college

The year before the final year in high school or college, usually the third of four years

An official list published after exams showing students and the degree class they received

A set time during the school day when a subject is taught

A fast mail service for letters and small packages that is delivered before other mail

The way a society is divided into groups by money, job, or social position

A group of people of similar ages, for example children or older adults

An art class where students draw, paint, or sculpt a live person who holds a pose often nude

By a cheaper travel or mail service that is slower than first class

A category below the highest level in rank or quality

A group of people with similar income, job and education levels

A university undergraduate degree given to students with the highest grades

A cheaper travel class on a ship, train, or plane than first class

The cheapest, most crowded seats on an airplane with little space

A class that teaches breathing, relaxation, and simple exercises to use during birth

A group of moss plants that have leaf-like green parts

A former group of fungi with no known sexual stage

A group of sea animals like sea urchins and sand dollars with spines and body parts arranged around the center

A former group of plants that included horsetails and extinct relatives

Feelings of envy, anger, or support between social classes

A person who is in the same class at school or university as you

A group of plants that includes the ginkgo tree Ginkgo biloba

A group of seed plants with features like both conifers and flowering plants

A group of small plants called liverworts that live mainly in moist places

Flowering plants that have one seed leaf and usually parallel veins, like grasses and palms

A group of plants like club mosses and quillworts

A group of plants like clubmosses that have tubes to carry water

A group of simple living things called slime molds that move and form visible colonies

Simple green plants like whisk ferns that have no true roots and make spores

A group of yew trees used in some plant classifications

A word from a small fixed set that helps show grammar, like in or and

Mail handled first and sent faster, like letters or postcards

A fast mail service for letters and postcards that gets priority delivery

A group of words that do the same job in grammar, like a noun or verb

A lesson where people learn the lively Lindy Hop swing dance

A main group of words like nouns, verbs, and adjectives that show a word's role in a sentence