I am not a pilot - just a student & play Ace Combat sometimes
Intrigued by the words Starboard & Port-side, I researched why these words are used instead of the simple ones, I found that:
Port is derived from the practice of sailors mooring ships on the left side at ports in order to prevent the steering oar from being crushed. src
Also, quite notably:
Since port and starboard never change, they are unambiguous references that are independent of a mariner’s orientation, and, thus, mariners use these nautical terms instead of left and right to avoid confusion. When looking forward, toward the bow of a ship, port and starboard refer to the left and right sides, respectively.src
I see both the reasons are derived upon the concerns of the marine world - so why do we use them in the aviation world?
This is specially interesting if we consider the fact that flying machines can maneuver in all 3D, newbies (me) tend to lose track of my VS. plane's left & right when not in level flight. Then why the added confusion?