colander vs strainer

colander and strainer both are nouns.

Word	Noun	Adjective	Verb	Adverb
colander	Yes	No	No	No
strainer	Yes	No	No	No

As nouns, strainer is a hypernym of colander; that is, strainer is a word with a broader meaning than colander:

colander: bowl-shaped strainer; used to wash or drain foods
strainer: a filter to retain larger pieces while smaller pieces and liquids pass through

colander (noun)	strainer (noun)
bowl-shaped strainer; used to wash or drain foods	a filter to retain larger pieces while smaller pieces and liquids pass through