The word 'exploratorium' is a made up word to name a place, usually an educational facility of some kind. Because the word is only used for the name of specific places, it is a proper noun.
Exploratorium was created in 1969.
Pencil proper or common noun
As a name of a road , Park Avenue', it is a proper noun, and both words star with a capital letter. However, when used separately, as 'the park, or 'the avenue', they are common nouns and so not need a capital letter.
Exxon is a proper noun
proper noun
Yes, the word 'Ali' is a proper noun, the name of a person.A proper noun is the name or title of a specific person, place, or thing.A proper noun is always capitalized.
proper noun
Proper noun
It is a proper noun, because it is the name of a specific thing.
it's a common noun. a proper noun would be Spider-Man.
what is trix
No, his younger brother Frank Oppenheimer created the Exploratorium. http://www.exploratorium.edu/about/our_story/history/frank/