tinker's dam vs derogation

tinker's dam and derogation both are nouns.

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

tinker's dam (noun)	derogation (noun)
something of little value	(law) the partial taking away of the effectiveness of a law; a partial repeal or abolition of a law
	a communication that belittles somebody or something