browser vs spectator

browser and spectator both are nouns.

Word	Noun	Adjective	Verb	Adverb
browser	Yes	No	No	No
spectator	Yes	No	No	No

As nouns, spectator is a hypernym of browser; that is, spectator is a word with a broader meaning than browser:

browser: a viewer who looks around casually without seeking anything in particular
spectator: a close observer; someone who looks at something (such as an exhibition of some kind)

Other hypernyms of browser include looker, viewer, watcher, witness.

browser (noun)	spectator (noun)
a program used to view HTML documents	a woman's pump with medium heel; usually in contrasting colors for toe and heel
a viewer who looks around casually without seeking anything in particular	a close observer; someone who looks at something (such as an exhibition of some kind)