flying drainpipe vs ramjet

flying drainpipe and ramjet both are nouns.

Word	Noun	Adjective	Verb	Adverb
flying drainpipe	Yes	No	No	No
ramjet	Yes	No	No	No

As nouns, flying drainpipe and ramjet are synonyms defined as:

flying drainpipe and ramjet: a simple type of jet engine; must be launched at high speed

Other synonyms of flying drainpipe include atherodyde, athodyd, ramjet engine.

flying drainpipe (noun)	ramjet (noun)
a simple type of jet engine; must be launched at high speed	a simple type of jet engine; must be launched at high speed