think back vs remember

think back and remember both are verbs.

Word	Noun	Adjective	Verb	Adverb
think back	No	No	Yes	No
remember	No	No	Yes	No

As verbs, think back and remember are synonyms defined as:

think back (verb)	remember (verb)
recapture the past; indulge in memories	recall knowledge from memory; have a recollection
	keep in mind for attention or consideration
	recapture the past; indulge in memories
	exercise, or have the power of, memory
	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