Game
Match
noun, する verb
An attempt to join together isn't just any get together. Imagine two people boxing. They attempt to knock each other out when they join together. That's why this word is game or match. Did you watch the 試合 today? No! Don't tell me what happened, I recorded it on the VHS.
しあい
This word uses the on'yomi し for 試 and the kun'yomi あい for 合. You learned both of these readings already, so you should be able to put them together!
良かったらもう一試合しませんか?
If you don't mind, why don't we play another game together?
けん道の試合の結果はどうでしたか?
What was the outcome of the kendo match?
「あの野球の試合は本当にひどかったね。」「本当にそうだね。」
"That baseball game was really terrible." "Yeah, tell me about it."