Welcome! Just FYI, these questions are usually answerable in the sub Lemmy_Support over at lemmy.ml.
Communities are called communities, there hasn't been really any push to rename them anything different.
You do have links, it's /c/ for us, but you're on the fediverse now so be care full with links. Not everyone is going to use the same host to access Lemmy, for example you're on lemmy.world and I'm on my own hosted one, so that /c/ link may fail for me as my instance may not be subscribed yet. (Don't worry, you'll get the hang of it).
The safer way to link communities is using the !____@_____ notation, similar to email addresses. So for the support community it'd be !lemmy_support@lemmy.ml - which all instances know how to link to that.