tampering vs tamper

tampering and tamper both are nouns.

Word	Noun	Adjective	Verb	Adverb
tampering	Yes	No	No	No
tamper	Yes	No	Yes	No

tampering (noun)	tamper (noun)
the act of altering something secretly or improperly	a tool for tamping (e.g., for tamping tobacco into a pipe bowl or a charge into a drill hole etc.)

tampering (verb)	tamper (verb)
	play around with or alter or falsify, usually secretively or dishonestly
	intrude in other people's affairs or business; interfere unwantedly