contemplate vs think

contemplate is not a noun while think is a noun.

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

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

contemplate: think intently and at length, as for spiritual purposes
think: use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments

Other hypernyms of contemplate include cerebrate, cogitate.

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

contemplate: reflect deeply on a subject
think: use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments

Other hypernyms of contemplate include cerebrate, cogitate.

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

contemplate (verb)	think (verb)
think intently and at length, as for spiritual purposes	bring into a given condition by mental preoccupation
reflect deeply on a subject	use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments
consider as a possibility	judge or regard; look upon; judge
look at thoughtfully; observe deep in thought	recall knowledge from memory; have a recollection
	expect, believe, or suppose
	have in mind as a purpose
	be capable of conscious thought
	focus one's attention on a certain state
	decide by pondering, reasoning, or reflecting
	ponder; reflect on, or reason about
	have or formulate in the mind
	dispose the mind in a certain way
	imagine or visualize