seagull

The word 'seagull' is a transparent compound formed from two native English elements. 'Sea' descends from the Proto-Germanic saiwiz, a term for a large inland lake or sea, which itself has uncertain Proto-Indo-European origins. 'Gull' is a relatively recent English word for the bird, first recorded in the 1400s, possibly of Celtic origin or imitative of its call. The compound 'seagull' logically and directly names the bird by its primary habitat, distinguishing it from other types of gulls that may frequent inland waters. This straightforward descriptive naming is characteristic of many English compound words.

Structure: sea (body of salt water) + gull (type of bird) sea: From Old English 'sǣ', meaning a large body of salt water. Functional role: noun, specifying location. gull: From Middle English 'gulle', a general term for a seabird. Functional role: noun, specifying the type of animal.