slicer vs cheese knife

slicer and cheese knife both are nouns.

Word	Noun	Adjective	Verb	Adverb
slicer	Yes	No	No	No
cheese knife	Yes	No	No	No

As nouns, cheese knife is a hyponym of slicer; that is, cheese knife is a word with a more specific, narrower meaning than slicer:

slicer: knife especially designed for slicing particular foods, as cheese
cheese knife: a type of kitchen knife specialized for the cutting of cheese.

slicer (noun)	cheese knife (noun)
knife especially designed for slicing particular foods, as cheese	a type of kitchen knife specialized for the cutting of cheese.
a machine for cutting; usually with a revolving blade
a golfer whose shots typically curve right (for right-handed golfers)