portion vs bad luck

portion and bad luck both are nouns.

Word	Noun	Adjective	Verb	Adverb
portion	Yes	No	Yes	No
bad luck	Yes	No	No	No

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

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

portion (noun)	bad luck (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 unpredictable outcome that is unfortunate
an individual quantity of food or drink taken as part of a meal	an unfortunate state resulting from unfavorable outcomes
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)	bad luck (verb)
give out