inshore vs seawater

inshore

adj
  • Close to (especially in sight of) a shore. 

  • Blowing from the sea to the land. 

adv
  • Near the shore. 

  • Towards the shore. 

seawater

adj
  • Consisting of seawater. 

  • Associated in some way with seawater, or intended for dealing with seawater. 

noun
  • The saltwater of a sea or ocean. 

How often have the words inshore and seawater occurred in a corpus of books? (source: Google Ngram Viewer )