coastal adjective coast·al  \ ˈkōs-tᵊl  \
1. of, relating to, or bordering on the sea, e.g., 'coastal peoples', 'a coastal community'
synonyms - maritime; seaside

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route noun \ ˈrüt,  ˈrau̇t  \ 
1. a travelled way; a means of access
2. an assigned territory to be systematically covered
synonyms - highway; channel; course