remember vs retain

remember and retain both are verbs.

Word	Noun	Adjective	Verb	Adverb
remember	No	No	Yes	No
retain	No	No	Yes	No

As verbs, retain is a hyponym of remember; that is, retain is a word with a more specific, narrower meaning than remember:

Other hyponyms of remember include bear in mind, mind, keep note, characterise, characterize, qualify.

remember (verb)	retain (verb)
recall knowledge from memory; have a recollection	keep in one's mind
keep in mind for attention or consideration	secure and keep for possible future use or application
recapture the past; indulge in memories	allow to remain in a place or position or maintain a property or feature
exercise, or have the power of, memory	hold back within
call to remembrance; keep alive the memory of someone or something, as in a ceremony
mention as by way of greeting or to indicate friendship
mention favorably, as in prayer
show appreciation to