Nouns

(n)worthan indefinite quantity of something having a specified value“10 dollars worth of gasoline”
(n)worththe quality that renders something desirable or valuable or useful

Adjectives

(s)deserving, worth(often used ironically) worthy of being treated in a particular way“an idea worth considering”, “the deserving poor”, “a deserving cause”
(s)worthhaving a specified value“not worth his salt”, “worth her weight in gold”, “an appraisal determined the antique carved chair was worth $900”