twist-off lid vs twist-off cap

twist-off lid and twist-off cap both are nouns.

Word	Noun	Adjective	Verb	Adverb
twist-off lid	Yes	No	No	No
twist-off cap	Yes	No	No	No

As nouns, twist-off lid and twist-off cap are synonyms defined as:

twist-off lid and twist-off cap: A type of lid or cap that can be removed by twisting it off; used in jars or glass bottles.

twist-off lid (noun)	twist-off cap (noun)
A type of lid or cap that can be removed by twisting it off; used in jars or glass bottles.	A type of lid or cap that can be removed by twisting it off; used in jars or glass bottles.