pop tent vs collapsible shelter

pop tent and collapsible shelter both are nouns.

Word	Noun	Adjective	Verb	Adverb
pop tent	Yes	No	No	No
collapsible shelter	Yes	No	No	No

As nouns, collapsible shelter is a hypernym of pop tent; that is, collapsible shelter is a word with a broader meaning than pop tent:

pop tent: a small tent that is easy to carry and quick to set up
collapsible shelter: a portable shelter (usually of canvas stretched over supporting poles and fastened to the ground with ropes and pegs)

Other hypernyms of pop tent include tent.

pop tent (noun)	collapsible shelter (noun)
a small tent that is easy to carry and quick to set up	a portable shelter (usually of canvas stretched over supporting poles and fastened to the ground with ropes and pegs)