worriment vs difficulty

worriment and difficulty both are nouns.

Word	Noun	Adjective	Verb	Adverb
worriment	Yes	No	No	No
difficulty	Yes	No	No	No

As nouns, difficulty is a hypernym of worriment; that is, difficulty is a word with a broader meaning than worriment:

worriment: a difficulty that causes anxiety
difficulty: the quality of being almost beyond one's ability to deal with and requiring a great effort to achieve a positive result

Other hypernyms of worriment include difficultness.

worriment (noun)	difficulty (noun)
a difficulty that causes anxiety	an effort that is inconvenient
	the quality of being almost beyond one's ability to deal with and requiring a great effort to achieve a positive result