Modifiers is indicative, action or event occurred, where (where) such as upstairs, downstairs, inside, outside, outdoors, indoors, here, there, somewhere, nowhere, everywhere, anywhere, abroad, overseas and more.
Adverbs are indicative of actions or events that occur anywhere (where) such as upstairs, downstairs, inside, outside, outdoors, indoors, here, there, somewhere, nowhere, everywhere, anywhere, abroad, overseas, and more.
The adverb indicating the action or event happens, where (where) such as upstairs downstairs inside outside,,,,, Outdoors indoors here there,,,,,,, somewhere nowhere everywhere anywhere abroad overseas,, and so on.