portion vs butt

portion and butt both are nouns.

Word	Noun	Adjective	Verb	Adverb
portion	Yes	No	Yes	No
butt	Yes	No	Yes	No

As nouns, butt is a hyponym of portion; that is, butt is a word with a more specific, narrower meaning than portion:

portion: something less than the whole of a human artifact
butt: the small unused part of something (especially the end of a cigarette that is left after smoking)

As nouns, butt is a hyponym of portion; that is, butt is a word with a more specific, narrower meaning than portion:

portion: something determined in relation to something that includes it
butt: the part of a plant from which the roots spring or the part of a stalk or trunk nearest the roots

portion (noun)	butt (noun)
the allotment of some amount by dividing something	thick end of the handle
something less than the whole of a human artifact	the small unused part of something (especially the end of a cigarette that is left after smoking)
an individual quantity of food or drink taken as part of a meal	a large cask (especially one holding a volume equivalent to 2 hogsheads or 126 gallons)
assets belonging to or due to or contributed by an individual person or group	sports equipment consisting of an object set up for a marksman or archer to aim at
money or property brought by a woman to her husband at marriage	finely ground tobacco wrapped in paper; for smoking
something determined in relation to something that includes it	a joint made by fastening ends together without overlapping
your overall circumstances or condition in life (including everything that happens to you)	the fleshy part of the human body that you sit on
	a victim of ridicule or pranks
	the part of a plant from which the roots spring or the part of a stalk or trunk nearest the roots

portion (verb)	butt (verb)
give out	to strike, thrust or shove against
	place end to end without overlapping
	lie adjacent to another or share a boundary