True, but it could also depend on the context or tone in which you're using the term. For example, if you're writing poetry, a song, or a story, you may want to use autumn, as it is more sophisticated and poetic, but if you are writing something more technical, such as a paper or an email, your word choice might be different. I personally would still use autumn, as I like the word better, but depending on the tone of your writing, it might not fit as well.