The term CORE CORN is composed of two words: 'CORE' and 'CORN'. The first word, 'CORE', is a five-letter word meaning 'HEART'. It is often used to refer to the innermost part of something, such as the CORE of an apple or the CORE of a person's being. The second word, 'CORN', is a four-letter word meaning 'GRAIN'. It is typically used to refer to a type of cereal GRAIN that is widely cultivated in many parts of the world. Together, the two words form the phrase 'CORE CORN', which can be used to refer to the HEART of a GRAIN, or the innermost part of a GRAIN.