retirement check vs retirement pension

retirement check and retirement pension both are nouns.

Word	Noun	Adjective	Verb	Adverb
retirement check	Yes	No	No	No
retirement pension	Yes	No	No	No

As nouns, retirement check and retirement pension are synonyms defined as:

retirement check and retirement pension: a monthly payment made to someone who is retired from work

Other synonyms of retirement check include old-age pension, retirement benefit, retirement fund, superannuation.

retirement check (noun)	retirement pension (noun)
a monthly payment made to someone who is retired from work	a monthly payment made to someone who is retired from work