speed frame vs simplex machine

speed frame and simplex machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
speed frame	Yes	No	No	No
simplex machine	Yes	No	No	No

As nouns, speed frame and simplex machine are synonyms defined as:

speed frame and simplex machine: a textile machine that transforms the drawn sliver into roving.

Other synonyms of speed frame include fly frame, roving frame.

speed frame (noun)	simplex machine (noun)
a textile machine that transforms the drawn sliver into roving.	a textile machine that transforms the drawn sliver into roving.