pick mattock vs mattock

pick mattock and mattock both are nouns.

Word	Noun	Adjective	Verb	Adverb
pick mattock	Yes	No	No	No
mattock	Yes	No	No	No

As nouns, mattock is a hypernym of pick mattock; that is, mattock is a word with a broader meaning than pick mattock:

pick mattock: a versatile hand tool that combines a pick and an adze, used for grubbing in hard soils and rocky terrain.
mattock: a kind of pick that is used for digging; has a flat blade set at right angles to the handle

pick mattock (noun)	mattock (noun)
a versatile hand tool that combines a pick and an adze, used for grubbing in hard soils and rocky terrain.	a kind of pick that is used for digging; has a flat blade set at right angles to the handle