portion vs misfortune

portion and misfortune both are nouns.

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

As nouns, misfortune is a hyponym of portion; that is, misfortune 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)
misfortune: an unfortunate state resulting from unfavorable outcomes

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

portion (noun)	misfortune (noun)
the allotment of some amount by dividing something	unnecessary and unforeseen trouble resulting from an unfortunate event
something less than the whole of a human artifact	an unfortunate state resulting from unfavorable outcomes
an individual quantity of food or drink taken as part of a meal
assets belonging to or due to or contributed by an individual person or group
money or property brought by a woman to her husband at marriage
something determined in relation to something that includes it
your overall circumstances or condition in life (including everything that happens to you)

portion (verb)	misfortune (verb)
give out