杯子：cup / mug
A nice cup of tea.
好喝的一杯茶。
A warm mug of tea.
温暖的一杯茶。

black tea 红茶

Herbal tea 草本茶
Tea that uses natural medicine ect considered good for your health.
这种茶含有对身体健康有好处的的天然草本。

Tea party 茶会
A time for cakes chatting and drinking tea, not as common as it used to be.
吃蛋糕喝茶聊天的时间，茶会没有以前那么流行了。

Green tea -- not so popular in the west as it is in China -- usually uses tea leaves.
绿茶，在西方，没有像在中国一样这么流行。

Tea leaves / Tea bags
茶叶包

Storm in a teacup -- making a big fuss about a little thing 小事一桩
It's a storm in teacup, nothing bad will happen.
这只是个小事儿，不会发生什么坏事。