The crossword solutions for the term 'HEART AND SOUL, E.G.' are 'DUET' (4 letters) and 'NOUNS' (5 letters). A DUET is a musical composition for two performers, and it is often used to describe a performance of two singers or instrumentalists. The term 'heart and soul' is often used to describe a passionate performance, and it can also be used to refer to a DUET. Nouns are words that refer to people, places, things, or ideas, and they are one of the main parts of speech in the English language. Therefore, the term 'heart and soul, e.g.' could refer to both a DUET and nouns.