Marines and Old salt

Marines noun - Members of a body of troops trained to serve on land or at sea.

Old salt and marines are semantically related. in sailor topic. In some cases you can use "Old salt" instead a noun "Marines", when it comes to topics like person who travels by sea.

Old salt noun - A man who serves as a sailor.

Marines and old salt are semantically related. Sometimes you can use "Marines" instead a noun phrase "Old salt".