The bolded words in the sentence, "Evan's joke was not only silly but also too long," are correlative conjunctions.
The bolded words in the sentence, "Evan’s joke was not only silly but also too long," are "not only... but also." These words are an example of correlative conjunctions. Correlative conjunctions are pairs of words that work together to connect words, phrases, or clauses. In this case, "not only" and "but also" are used to connect the adjectives "silly" and "too long" to describe Evan's joke.
