Yes, the word 'Starbucks' is a noun, a word for a thing (company).The noun 'Starbucks' is a proper noun, the name of a specific company.
proper noun
The word 'was' is not a noun.The word 'was' is a verb, the past tense of the verb to be.The verb 'was' functions as an auxiliary verb (or helping verb).The verb 'was' functions as a linking verb.A noun is a word for a person, a place, or a thing.A common noun is a general word for a person, a place, or a thing.A proper noun is the name or title of a specific person, place, or thing.EXAMPLESJohn was at home.The word 'John' is a proper noun, the name of a person.The word 'was' is a simple, past tense verb.A fish was swimming in the pond.The word 'fish' is a common noun, a general word for a thing.The word 'pond' is a common noun, a general word for a thing.The word 'was' is an auxiliary verb for the main verb 'swimming'.Starbucks was open.The word 'Starbucks' is a proper noun, the name of a company.The word 'was' is a linking verb, the adjective 'open' restates the subject noun 'Starbucks' (Starbucks = open).
Common
Common noun
common
Pea is a common noun, and peas is the plural...still a common noun.
A common noun.
Most definitely a common noun.
Camel is a common noun.
Th word tail is a common noun because the first letter of a proper noun is capitalized.
common