twist-off cap vs twist-off lid

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

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

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

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

twist-off cap (noun)	twist-off lid (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.