The term 'Young Frog' can be summed up by the crossword solution 'TADPOLE', which is a seven-letter word. Tadpoles are the larval stage of frogs and toads, and they typically have a fish-like appearance with a long tail and gills. They live in water and feed on algae, small aquatic invertebrates, and other organic matter. As they grow, they develop legs and lungs and eventually metamorphose into adult frogs.