感

In a sentence

• 彼女の表情から、彼の言葉に対する失望感が伝わってきた。

  From her expression, a sense of disappointment toward his words was conveyed.

  Here, '感' is used in the compound '失望感' (sense of disappointment) to indicate a feeling or emotional state.

• 感動的な演技に、観客全員が涙を流した。

  Moved by the touching performance, the entire audience shed tears.

  In this sentence, '感' appears in the word '感動的' (moving or emotional) to denote an emotional impact.

• 彼にはユーモアのセンスがあるが、そこから奇妙な感覚も生まれることがある。

  He has a sense of humor, but it can also generate a peculiar feeling.

  Here, '感' is part of the word '感覚' (sense or feeling), referring to the impression or sensation experienced.