IMO, this thread is turning into semantic nonsense.
Wide, medium or long, it's whatever is suited to the job in hand. It's not to do with random choices but requirements.
Any 'novice' picking up on this thread is going to end up more confused than ever before. If you have but a single lens, just use it to the best of your ability, and frame your shots so that they please you. Period. It's partly the reason for the great disciplinary advantage, regardless of how many bits of glass you own, of going out of the house with a fixed lens/camera combination and just using it. There's nothing much more can be said that adds a great deal of value.
Rob C