lapping machine vs machine tool

lapping machine and machine tool both are nouns.

Word	Noun	Adjective	Verb	Adverb
lapping machine	Yes	No	No	No
machine tool	Yes	No	No	No

As nouns, machine tool is a hypernym of lapping machine; that is, machine tool is a word with a broader meaning than lapping machine:

lapping machine: a machine used in a machining process known as lapping, in which two surfaces are rubbed together with an abrasive between them.
machine tool: a powered machine for cutting or shaping or finishing metals or other materials

lapping machine (noun)	machine tool (noun)
a machine used in a machining process known as lapping, in which two surfaces are rubbed together with an abrasive between them.	a powered machine for cutting or shaping or finishing metals or other materials