informal vs colloquial

informal and colloquial both are adjectives.

Word	Noun	Adjective	Verb	Adverb
informal	No	Yes	No	No
colloquial	No	Yes	No	No

informal (adjective)	colloquial (adjective)
not formal	characteristic of informal spoken language or conversation
used of spoken and written language
having or fostering a warm or friendly and informal atmosphere
not officially recognized or controlled