blow tube vs blowgun

blow tube and blowgun both are nouns.

Word	Noun	Adjective	Verb	Adverb
blow tube	Yes	No	No	No
blowgun	Yes	No	No	No

As nouns, blow tube and blowgun are synonyms defined as:

blow tube and blowgun: a tube through which darts can be shot by blowing

Other synonyms of blow tube include blowpipe, blowtube.

blow tube (noun)	blowgun (noun)
a tube that directs air or gas into a flame to concentrate heat	a tube through which darts can be shot by blowing
a tube through which darts can be shot by blowing