worth vs halfpennyworth

worth and halfpennyworth both are nouns.

Word	Noun	Adjective	Verb	Adverb
worth	Yes	Yes	No	No
halfpennyworth	Yes	No	No	No

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

Other hyponyms of worth include ha'p'orth, penn'orth, pennyworth.

worth (noun)	halfpennyworth (noun)
the quality that renders something desirable or valuable or useful	the amount that can be bought for a halfpenny
an indefinite quantity of something having a specified value

worth (adjective)	halfpennyworth (adjective)
having a specified value
(often used ironically) worthy of being treated in a particular way