Yes, it is the same for the different types:camomile tea, etc. As I said, you can use either word, but here in the UK, "tea" is used more often, with such infusions generally referred to as "herbal teas". However, that might not be the case in other English-speaking countries, so it would be good to get some responses from foreros in those countries too.
In fact, in instructions/advice, it is probably just as common to use the word "infusion": Make an infusion using fresh mint leaves. Perhaps it would be a good idea for you to tell us the context in which you want to use the words.