consider vs think about

consider and think about both are verbs.

Word	Noun	Adjective	Verb	Adverb
consider	No	No	Yes	No
think about	No	No	Yes	No

As verbs, think about is a hypernym of consider; that is, think about is a word with a broader meaning than consider:

consider (verb)	think about (verb)
deem to be	take into consideration, have in view
take into consideration for exemplifying purposes	have on one's mind, think about actively
regard or treat with consideration, respect, and esteem
judge or regard; look upon; judge
show consideration for; take into account
think about carefully; weigh
give careful consideration to
look at attentively
look at carefully; study mentally