invest vs investment

invest is not a noun while investment is a noun.

Word	Noun	Adjective	Verb	Adverb
invest	No	No	Yes	No
investment	Yes	No	No	No

invest (noun)	investment (noun)
	the act of investing; laying out money or capital in an enterprise with the expectation of profit
	the act of putting on robes or vestments
	the ceremonial act of clothing someone in the insignia of an office; the formal promotion of a person to an office or rank
	outer layer or covering of an organ or part or organism
	the commitment of something other than money (time, energy, or effort) to a project with the expectation of some worthwhile result
	money that is invested with an expectation of profit

invest (verb)	investment (verb)
make an investment
provide with power and authority
place ceremoniously or formally in an office or position
furnish with power or authority; of kings or emperors
give qualities or abilities to