reception line vs waiting line

reception line and waiting line both are nouns.

Word	Noun	Adjective	Verb	Adverb
reception line	Yes	No	No	No
waiting line	Yes	No	No	No

As nouns, waiting line is a hypernym of reception line; that is, waiting line is a word with a broader meaning than reception line:

reception line: a line of people (hosts and guests of honor) who welcome the guests at a reception party
waiting line: a line of people or vehicles waiting for something

Other hypernyms of reception line include queue.

reception line (noun)	waiting line (noun)
a line of people (hosts and guests of honor) who welcome the guests at a reception party	a line of people or vehicles waiting for something