It can be a place (Capital city) or a thing (Capitol building) Note difference in spelling.
"Capitol" is fundamentally a concrete noun, meaning a building where the highest officials, or at least the legislators, of a government have their offices. However, like most English nouns, "Capitol" can also be used as a "substantive" adjective in such phrases as "Capitol dome" and "Capitol Police".
a person and a thing
A memorial is a place that honors a person, event, or thing.
thing
A noun is a word that represents a person, place, thing, or idea.
Yes. (person, place or thing & it IS a thing)
Place
A namesake is when a person, place, or thing is named after another person, place, or thing.
Sunscreen is a noun, it is a thing, not a person or place. A noun is a person, place or thing.
The word "week" is a concept or unit of time, not a person, place, or thing.
It can be called a place and thing.
Thing