tamper vs meddle

tamper is a noun but meddle is not a noun.

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

As verbs, tamper and meddle are synonyms defined as:

tamper and meddle: intrude in other people's affairs or business; interfere unwantedly

tamper (noun)	meddle (noun)
a tool for tamping (e.g., for tamping tobacco into a pipe bowl or a charge into a drill hole etc.)

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