portion vs failure

portion and failure both are nouns.

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

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

portion: your overall circumstances or condition in life (including everything that happens to you)
failure: lack of success

Other hyponyms of portion include good fortune, good luck, luckiness, providence, bad luck, ill luck, misfortune, tough luck.

portion (noun)	failure (noun)
the allotment of some amount by dividing something	an act that fails
something less than the whole of a human artifact	an unexpected omission
an individual quantity of food or drink taken as part of a meal	an event that does not accomplish its intended purpose
assets belonging to or due to or contributed by an individual person or group	a person with a record of failing; someone who loses consistently
money or property brought by a woman to her husband at marriage	lack of success
something determined in relation to something that includes it	loss of ability to function normally
your overall circumstances or condition in life (including everything that happens to you)	inability to discharge all your debts as they come due

portion (verb)	failure (verb)
give out