portion vs part

portion and part both are nouns.

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

As nouns, portion and part are synonyms defined as:

As nouns, portion and part are synonyms defined as:

portion and part: assets belonging to or due to or contributed by an individual person or group

Other synonyms of portion include percentage, share.

As nouns, portion and part are synonyms defined as:

portion and part: something determined in relation to something that includes it

Other synonyms of portion include component, component part, constituent.

portion (noun)	part (noun)
the allotment of some amount by dividing something	the actions and activities assigned to or required or expected of a person or group
something less than the whole of a human artifact	the effort contributed by a person in bringing about a result
an individual quantity of food or drink taken as part of a meal	something less than the whole of a human artifact
assets belonging to or due to or contributed by an individual person or group	an item that is an instance of some type
money or property brought by a woman to her husband at marriage	a line of scalp that can be seen when sections of hair are combed in opposite directions
something determined in relation to something that includes it	one of the portions into which something is regarded as divided and which together constitute a whole
your overall circumstances or condition in life (including everything that happens to you)	an actor's portrayal of someone in a play
	that which concerns a person with regard to a particular role or situation
	the melody carried by a particular voice or instrument in polyphonic music
	the extended spatial location of something
	a portion of a natural object
	assets belonging to or due to or contributed by an individual person or group
	something determined in relation to something that includes it

portion (verb)	part (verb)
give out	move or break apart
	force, take, or pull apart
	depart for someplace
	go one's own way; move apart
	discontinue an association or relation; go different ways

portion (adverb)	part (adverb)
	to some extent; in some degree; not wholly