portion vs good luck

portion and good luck both are nouns.

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

As nouns, good luck is a hyponym of portion; that is, good 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)
good luck: an auspicious state resulting from favorable outcomes

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

portion (noun)	good luck (noun)
the allotment of some amount by dividing something	an unexpected piece of good luck
something less than the whole of a human artifact	a stroke of luck
an individual quantity of food or drink taken as part of a meal	an auspicious state resulting from favorable 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)	good luck (verb)
give out