A conjunction, in the context of grammar, refers to a word used to connect clauses, phrases, or words that are considered conjuncts or group of words that add information to the sentence. In the given sentence, the conjunction used was the word 'but'. It links the two clauses: "Cathy won not only a blue ribbon" and "a<span>lso took home the champion trophy.</span>"
Starr is trying to play it cool , which insinuates that starr is not concerned, but that fact that she/he has to "play" it cool shows that he/she is actually concerned and not bothered.<span />