quotation mark vs inverted comma

quotation mark and inverted comma both are nouns.

Word	Noun	Adjective	Verb	Adverb
quotation mark	Yes	No	No	No
inverted comma	Yes	No	No	No

As nouns, quotation mark and inverted comma are synonyms defined as:

quotation mark and inverted comma: a punctuation mark used to attribute the enclosed text to someone else

Other synonyms of quotation mark include quote.

quotation mark (noun)	inverted comma (noun)
a punctuation mark used to attribute the enclosed text to someone else	a punctuation mark used to attribute the enclosed text to someone else