There are currencies that you can acquire in the game:

Gems
You can spend gems to get extra swaps and to instantly unlock event rounds. They may also be used to participate in events if you run out of tickets.

You can earn gems by participating in events, completing the achievements, leveling up, watching ads and by logging in daily. You can also purchase gems through the in-game shop.

Ticket
You can use your Tickets to enter the events.

XP
XP is used to level up and get awesome rewards. You can earn it by completing games of Wordzee!

Coins
Coins can be used to purchase Card Packs in the shop. In addition to Gems and Tickets you get from High Score and Totaliser, you will now get Coins as well.
Coins will also be obtained by recycling duplicate Tile Cards.

Tiles
Tiles, Card Packs and Tile Cards have Common, Rare and Epic rarity. Tiles will be unlocked with Tile Cards, which can be found in Card Packs; and Card Packs can be either bought in Shop with Coins, or won throughout different game modes.