loaf vs luncheon meat

loaf and luncheon meat both are nouns.

Word	Noun	Adjective	Verb	Adverb
loaf	Yes	No	Yes	No
luncheon meat	Yes	No	No	No

As nouns, luncheon meat is a hyponym of loaf; that is, luncheon meat is a word with a more specific, narrower meaning than loaf:

loaf: a quantity of food (other than bread) formed in a particular shape
luncheon meat: any of various sausages or molded loaf meats sliced and served cold

Other hyponyms of loaf include loaf sugar, sugar loaf, sugarloaf, pound cake, haslet, headcheese, lunch meat, scrapple.

loaf (noun)	luncheon meat (noun)
a shaped mass of baked bread that is usually sliced before eating	any of various sausages or molded loaf meats sliced and served cold
a quantity of food (other than bread) formed in a particular shape

loaf (verb)	luncheon meat (verb)
be about a place without any apparent purpose
be lazy or idle