tie in vs think of

tie in and think of both are verbs.

Word	Noun	Adjective	Verb	Adverb
tie in	No	No	Yes	No
think of	No	No	Yes	No

As verbs, think of is a hyponym of tie in; that is, think of is a word with a more specific, narrower meaning than tie in:

Other hyponyms of tie in include remember, interrelate, correlate, identify, free-associate, have in mind, mean.

tie in (verb)	think of (verb)
make a logical or causal connection	keep in mind for attention or consideration
be in connection with something relevant	look on as or consider
	intend to refer to
	take into consideration, have in view
	choose in one's mind
	devise or invent