What type of conjunction are the bolded words? evan’s joke was not only silly but also too long.

The bolded words ("not only...but also") form a correlative conjunction.

Explanation: Correlative conjunctions are conjunctions made up of two parts, that is to say they occur in pairs, and they are used to connect ideas that have equal importance. In the sentence provided, "not only...but also" is a correlative conjunction since it is balancing two ideas: that Evan's joke was silly and that Evan's joke was too long. Other examples of correlative conjunctions are neither/nor and either/or.

- "a nonrestrictive clause functions as a modifier to a noun (that is an object, person or concept). these clauses can be described by the following three options: it is set off by comas, it contains a subject and a verbs and it adds nonessential information to the sentence.

for example, in "here is bill gates, who confounded microsoft software company" we can identify "who confounded microsoft software company" as a nonrestrictive clause modifying the noun bill gates. this clause can be describes as a nonrestrictive clause because it is separated by a comma, it adds nonessential information to identify who bill gates is and it must contain both a subject (who) and a verb (confounded)."