invite vs invitatory

invite is a noun but invitatory is not a noun.

Word	Noun	Adjective	Verb	Adverb
invite	Yes	No	Yes	No
invitatory	No	Yes	No	No

invite (noun)	invitatory (noun)
a colloquial expression for invitation

invite (adjective)	invitatory (adjective)
	conveying an invitation

invite (verb)	invitatory (verb)
ask someone in a friendly way to do something
request the participation or presence of
ask to enter
express willingness to have in one's home or environs
give rise to a desire by being attractive or inviting
increase the likelihood of
invite someone to one's house
have as a guest