The noun is Joe.
There is no pronoun in your sentence: Joe is a noun (the subject). wanted to be is the verb. a is the article modifying the object noun. meteorologist is a noun (the object).
The nouns in the sentence are Joe, a proper noun, jump and class, both common nouns.
The appositive in the sentence is "Joe," which renames or explains the noun "uncle."
There is no appositive in the sentence given.An appositive is a noun or noun phrase that renames another noun or pronoun just before it.An appositive is set off in a sentence with a comma before and after it.Examples of the sentence with appositive are:My uncle, Joe, bought a dozen tulips.The noun 'Joe' renames the noun phrase 'My uncle'.My Uncle Joe, a friendly fellow, bought a dozen tulips.The noun phrase 'a friendly fellow' renames the noun phrase 'my Uncle Joe'.The man, my Uncle Joe, bought a dozen tulips.The noun phrase 'my Uncle Joe' renames the noun phrase 'the man'.Note: The only other noun (tulips) or noun phrase (a dozen tulips) in the sentence is the direct object of the verb 'bought'. When a noun or noun phrase follows a direct object to rename it, it's called an object complement.Example: My Uncle Joe bought a dozen tulips, yellow ones.
in the sentence "joe is exhausted" exhausted is a pronoun, describes "joe" the noun in the sentence "joe exhausted all of his options" exhausted is a verb, describing what the noun is doing or has done depends on how the word is being used
He went to the city
Joe had to separate fact from fiction. Joe had a separate bank account from his wife's account.
The noun 'Joseph' is a singular, proper noun; the name of a person.
Sam likes himself.
In the sentence "Joe injured by the ball left the game," the participle is "injured." It describes Joe and indicates that he was affected by the action of the ball. Participles often function as adjectives and can provide additional information about a noun in a sentence.
Schizophrenia is a noun, so you use it as you would any other noun (when it is appropriate). Example: Joe developed schizophrenia last spring.
"The grandpa" does not require a capital as long as the word 'the' is in front of it. In this case, it is a common noun, as in this (somewhat redundant) sentence: My Uncle Joe is the grandpa of five grandchildren.Grandpa should be capitalised when it is used as a proper noun, e.g. "When is Grandpa Joe coming to visit?" Note that it is not preceded by the word 'the' in this instance.