I'm managing an interactive community website for a video game.
The video game is about cards which are bundled as decks. One can construct multiple decks with different cards. The website I've built allows to build & share such decks.
The website name actually includes the word decks.
One problem I see is that the majority of users is calling decks builds. Analytics is confirming this.
So my problem is: the competition is using the word build over and over again while I'm using deck. And as I said build is apparently the preferred (even when wrong) term.
I don't want to lose rankings / want to improve rankings to my page with the term build.
The actual question: what can I do to teach search machines that deck and build are synonyms in my case?
I've already used both terms as meta keywords like
<game> decks, <game> builds
What I don't want to do is using the term build on my actual page since it's kinda contradictory with decks in the site name/domain