For example, there are thin and thin. Slender figure. As thin as a bone. Small and thin. Pale and thin. Thin. Bamboo pole, chopsticks. Toothpick, telephone pole. Thin and lonely.
The sentence describing a man's thinness is as thin as a hemp pole.
He is weak, tall and meaty, as thin as a mantis after autumn.
Her thin body is supported like a baton in a football club uniform.
He is really thin, like an autumn pond lotus, so that he becomes so old at the age of 43.