think up vs manufacture

think up is not a noun while manufacture is a noun.

Word	Noun	Adjective	Verb	Adverb
think up	No	No	Yes	No
manufacture	Yes	No	Yes	No

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

Other hyponyms of think up include idealise, idealize, cook up, fabricate, invent, make up.

think up (noun)	manufacture (noun)
	the organized action of making of goods and services for sale
	the act of making something (a product) from raw materials

think up (verb)	manufacture (verb)
devise or invent	put together out of artificial or natural components or parts
	concoct something artificial or untrue
	create or produce in a mechanical way
	produce naturally