thing vs occurrent

thing and occurrent both are nouns.

Word	Noun	Adjective	Verb	Adverb
thing	Yes	No	No	No
occurrent	Yes	Yes	No	No

As nouns, occurrent is a hypernym of thing; that is, occurrent is a word with a broader meaning than thing:

Other hypernyms of thing include happening, natural event, occurrence.

thing (noun)	occurrent (noun)
a separate and self-contained entity	an event that happens
an action
an artifact
an entity that is not named specifically
any attribute or quality considered as having its own existence
a special abstraction
a special objective
a vaguely specified concern
a statement regarded as an object
an event
a persistent illogical feeling of desire or aversion
a special situation

thing (adjective)	occurrent (adjective)
	presently occurring (either causally or incidentally)