Lexical features
Grammar
Phonology
Functions
100

Are kind of fixed expression as they Can't be changed, but their meaning is usually different from the combination of the individual words they contain. 

Idioms

100

the arrangement of words into patterns which have meaning

Grammatical Structure

100
How many features are used in English

Phonemes, word stress, sentence stress and information

100

reason why we communicate

Function
200

Fixed expressions and idioms are all different kinds of...

Chunks

200

Group of letters added at the beginning or end of a base word

Affixes
200

The smallest unit of sound that can make a difference to meaning in a language

Phoneme

200

What does exponents express

Levels of formality 

300

Words with the same or similar meaning

Synonyms

300

A group of letters added at the beginning of a base word

Prefixes

300

Notice or understand the different between 2 things

distinguish

300

Show neither great respect nor too much casualness towards the person we are talking to

Neutral

400

Groups of words that belong to the same topic area

Lexical Set

400

A group of letters added at the end of a base word

Suffixes

400

The phonemes of English are often show in a... 

phonemic chart

400

Language that reflects the situation in which it is used is often referred to as...

Register

500

Words which have the same or similar forms in two languages but a different meaning

False Friends

500

How many parts of speech are there in English

9

500

Spoken using the vibration of our voice

voiced sounds

500

People usually choose to use the level of formality that suits a situation

Appropriacy