think twice vs consider

think twice and consider both are verbs.

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

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

Other hypernyms of think twice include debate, deliberate, moot, turn over.

think twice (verb)	consider (verb)
consider and reconsider carefully	deem to be
	take into consideration for exemplifying purposes
	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