Some nouns connected with fire include flame, inferno, ember, and blaze.
No, that is not true. The antecedent can be one noun, or two or more nouns. For example: Jack and Jill went up the hill carrying a pail with them. (the antecedent for the pronoun 'them' is the two nouns, Jack, Jill) I have apple, cherry, and lemon. Which one would you like? (there is no antecedent for the pronoun 'I'; the antecedents for the indefinite pronoun 'one' are the nouns apple, cherry, lemon)
Four computers and two phone devices can be connected with that.
Two types of nouns are common and proper nouns.
The two nouns in your sentence are words and nouns, they are plural, common nouns.
Two kinds of nouns are common or proper, singular or plural.
Abstract nouns:educationtroubleConcrete nouns: elevatortree
The two nouns, 'nouns' and 'sentence' are placed correctly in your sentence.
The two numbers of nouns are singular and plural.
There are two nouns in the sentence: flower and fragrance.
It's hard to figure out what "it" is in your question. Are you referring to the subject of a sentence that has two nouns connected by the word and, as in Bob and Ray are playing baseball? In that case, the subject, Bob and Ray, is plural and takes a plural verb. But when the two nouns connected by and act as a unit, they take a singular verb, as in Ham and eggs is my favorite breakfast and Pork and beans tastes great.
proper nouns = Helen, Romecommon nouns = table, computer