Technique
Art, Skill
independent noun, in compounds
What is a skill? It's something you can do, and do quite well. It is a technique that you can make happen with ease.
Since this word is made up of a single kanji, it should use the kun'yomi reading. When learning the kanji, you didn't learn that reading, so here's a mnemonic to help you with this word: You do your technique on a bad guy, coming at you. You flip him over and knock him out. He was (わざ) a threat, but now he's not. You look closer at the bad guy. Turns out it's Woz, the Apple Co-founder. He was just trying to hand you an iPhone12, not grab your wrist. Whoops!
ワオ！すごい技をマスターしたね。
Wow! You've mastered an amazing skill.
どんな技を使って彼女をゲットしたの？
What kind of technique did you use to win her over?
さすが、プロの技だね。感動したわ。
As expected, it's a pro's technique. I'm impressed.