think vs consider

think is a noun but consider is not a noun.

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

As verbs, think and consider are synonyms defined as:

Other synonyms of think include believe, conceive.

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

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

Other hypernyms of think include believe, conceive, think.

think (noun)	consider (noun)
an instance of deliberate thinking

think (verb)	consider (verb)
bring into a given condition by mental preoccupation	deem to be
use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments	take into consideration for exemplifying purposes
judge or regard; look upon; judge	regard or treat with consideration, respect, and esteem
recall knowledge from memory; have a recollection	judge or regard; look upon; judge
expect, believe, or suppose	show consideration for; take into account
have in mind as a purpose	think about carefully; weigh
be capable of conscious thought	give careful consideration to
focus one's attention on a certain state	look at attentively
decide by pondering, reasoning, or reflecting	look at carefully; study mentally
ponder; reflect on, or reason about
have or formulate in the mind
dispose the mind in a certain way
imagine or visualize