Genteel term for a gentlemen caller?

A gentleman is an individual of middle rank of nobility without title but with a coat of arms. The term is designed to mock the status as if to say they men are acting more as yeoman than as men of...

Buenos días damas y caballeros.

We often call "undefined terms" variables. Their value is not known; it can vary. And thus the name we assign them is variable.

The term of office for the US House of Representatives is two years; there are no term limits. Representatives may be elected for as many terms as the voters wish, for as long as the Representative...

I'm not sure exactly what type of decision you are trying to find short term and long term for, but for business decisions short term is zero to three months, and long term is anything over a year.