Scary
い adjective
This is a single kanji with an い on the end, meaning you know it's probably an adjective. What's the adjective form of scary? It's also scary.
You know what's really scary, like double scary (because kanji and vocab both mean scary)? How about your coworkers (こわ). They are all insane, and you know it. Absolute nutjobs they are.
火星でマグニチュード7の地震が起きたんだってさ。怖いね！
It seems that a magnitude 7 earthquake occurred on Mars. Scary!