screw press vs mechanical press

screw press and mechanical press both are nouns.

Word	Noun	Adjective	Verb	Adverb
screw press	Yes	No	No	No
mechanical press	Yes	No	No	No

As nouns, mechanical press is a hypernym of screw press; that is, mechanical press is a word with a broader meaning than screw press:

screw press: a press in which pressure is exerted by means of a screw.
mechanical press: any machine that exerts pressure to form or shape or cut materials or extract liquids or compress solids

Other hypernyms of screw press include press.

screw press (noun)	mechanical press (noun)
a press in which pressure is exerted by means of a screw.	any machine that exerts pressure to form or shape or cut materials or extract liquids or compress solids