Kimono and Yukata - 着物 / 浴衣
The main difference is the fabric used: the kimono is silk and the yukata is cotton.
Kimono are worn by both women and men, it is a traditional dress.
Since kimono are made of silk, they are more expensive than yukata, they are more sophisticated, their design is unique and you will never see the same kimono twice. The other difference is that the kimono has at least two collars: one close to the neck and one placed a little lower. It is worn with a belt tied in the back. When you wear a kimono, you must also wear special socks and shoes called zori or geta. These accessories are not necessary when wearing a yukata.
Yukata are mainly worn by women. They are usually worn in the summer, during festivals. They are also worn as dressing gowns in hotels or onsen (hot springs).
The word kimono is a combination of ki = to wear and mono = thing and therefore literally means "thing to wear".
The word yukata is a combination of yu = bath and katabira = undergarment and means "bathing suit".