The Japanese noun '感 (かん)' refers to a 'feeling' or 'sense'. It is often used to describe an emotional or physical sensation, or a perception of something. This word is commonly used in compound words to express specific types of feelings or senses, such as '安心感 (あんしんかん)' (a sense of security) or '違和感 (いわかん)' (a sense of discomfort). For example: I have a strange feeling「変な感がある」(へんなかんがある). She has a strong sense of responsibility「彼女は責任感が強い」(かのじょはせきにんかんがつよい). Note that '感' is often used in abstract or emotional contexts, and it can be paired with other kanji to create nuanced meanings.