As nouns the difference between coyote and tugboat
is that
coyote is
canis latrans , a species of canine native to north america while
tugboat is a small, powerful boat (a "tugship" in other languages) used to push or pull barges or to help maneuver larger vessels.
As a verb coyote
is to prospect for gold by manually digging holes into overlying earth, as into a hillside.