tegument vs investment

tegument and investment both are nouns.

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

As nouns, investment is a hyponym of tegument; that is, investment is a word with a more specific, narrower meaning than tegument:

tegument (noun)	investment (noun)
a natural protective body covering and site of the sense of touch	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