Universal grammar or linguistic universals

Consonant cluster reduction

Deletion

Deletion of unstressed syllables

Addition

Straightforward deletion

Assimilation

Substitution

Which consonant sounds are acquired by the age of 24 months?

Which consonant sounds are acquired by the age of 30 months?

Which consonant sounds are acquired by the age of 36 months?

Which consonant sounds are acquired by the age of 42 months?

Which consonant sounds are acquired by the age of 48+ months?

Vegetative stage

Cooing stage

Babbling stage

Proto words

Proto word stage

Holophrastic stage

Telegraphic stage

Two word stage

Post-telegraphic stage

Holophrase

Overextension

Underextension

Hyponym

Hypernym

Framing

Recasting

Expansion

Synonymy

Content words

Function words