tinker's dam vs tinker's damn

tinker's dam and tinker's damn both are nouns.

Word	Noun	Adjective	Verb	Adverb
tinker's dam	Yes	No	No	No
tinker's damn	Yes	No	No	No

As nouns, tinker's dam and tinker's damn are synonyms defined as:

Other synonyms of tinker's dam include damn, darn, hoot, red cent, shit, shucks.

tinker's dam (noun)	tinker's damn (noun)
something of little value	something of little value