entering vs invasion

entering and invasion both are nouns.

Word	Noun	Adjective	Verb	Adverb
entering	Yes	No	No	No
invasion	Yes	No	No	No

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

Other hyponyms of entering include encroachment, intrusion.

entering (noun)	invasion (noun)
the act of entering	the act of invading; the act of an army that invades for conquest or plunder
a movement into or inward	any entry into an area not previously occupied
	(pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body