mouldboard plough vs plough

mouldboard plough and plough both are nouns.

Word	Noun	Adjective	Verb	Adverb
mouldboard plough	Yes	No	No	No
plough	Yes	No	Yes	No

As nouns, plough is a hypernym of mouldboard plough; that is, plough is a word with a broader meaning than mouldboard plough:

mouldboard plough: plow that has a moldboard
plough: a farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing

Other hypernyms of mouldboard plough include plow.

mouldboard plough (noun)	plough (noun)
plow that has a moldboard	a farm tool having one or more heavy blades to break the soil and cut a furrow prior to sowing

mouldboard plough (verb)	plough (verb)
	to break and turn over earth especially with a plow
	move in a way resembling that of a plow cutting into or going through the soil