trivia vs physical object

trivia and physical object both are nouns.

Word	Noun	Adjective	Verb	Adverb
trivia	Yes	No	No	No
physical object	Yes	No	No	No

As nouns, physical object is a hypernym of trivia; that is, physical object is a word with a broader meaning than trivia:

trivia: something of small importance
physical object: a tangible and visible entity; an entity that can cast a shadow

Other hypernyms of trivia include object.

trivia (noun)	physical object (noun)
something of small importance	a tangible and visible entity; an entity that can cast a shadow