blowgun vs blow tube

blowgun and blow tube both are nouns.

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

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

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

Other synonyms of blowgun include blowpipe, blowtube.

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