the answer to this question is ... not a lot really, they are both fully qualified to do the job, however a naval doctor does not carry the title (dr) in front of his name.
French navy refers to the specific navy of France. Navy may refer to any countries navy.
army-responsible on land navy-responsible at sea
There's no difference their both under the Department of the Navy.
The spelling
Nothing - Department of the Navy is the formal title for the Pentagon division that encompasses the U.S. Navy and the U.S. Marine Corps. Navy Department is an informal term.
None, to my knowledge..........................
the spetsnaz Sorry bro, it wasnt Navy SEALs vs. Spetsnaz, it was Green Beret vs. Spetsnaz, and yes there is an incredible difference between Green Beret and the Navy SEALs
"Navy" is a military institution operating on the water, whereas "seaman" refers to a specific grade of military personnel serving aboard a ship or submarine in the Navy. It is kind of like the difference between government and a senator.
. The Board consisted of three senior officers who advised the Secretary of the Navy, while each bureau was responsible for a specific aspect of naval administration.
Master-at-Arms in the Navy are responsible for discipline and law enforcement. There are no MP's in the Navy; the Army's Military Police Corps are largely responsible for the same thing in the Army.
There isn't much of a difference as the Marines are both water and ground based Only major differences are ranks, boot camp is harder in Marines, and Navy is all Sea.
there is no difference except the branch of service.