noun
Refers to the actual hand on the left side of the body. Common with particles such as 左手で, 左手に, and 左手を.
彼女は左手で字を書く。
She writes with her left hand.
左手に指輪をしている。
I am wearing a ring on my left hand.
noun, noun which may take the genitive case particle 'no'
left-hand side; left-hand direction; on the left
Uses 手 in the sense of 'side' or 'direction'; often appears as 左手に, 左手の, or 左手側 to describe where something is located.
駅を出ると、左手に郵便局があります。
When you leave the station, there is a post office on your left.
左手の道をまっすぐ進んでください。
Please go straight along the road on the left.