If you are talking about female friends, you would use "amigas".
Here are some examples:
* "Eu tenho muitos amigos." (I have many friends.)
* "Ela tem amigas que moram no Brasil." (She has friends who live in Brazil.)
You can also use the word "companheiros" which means "companions" or "camaradas" which means "comrades".
It's important to note that depending on the context and the region of Portugal or Brazil, there may be other ways to say "friends" that are more specific or informal.