What are positive and negative charges? Which type of charge does an electron have?

(N/A) The terms positive and negative for charges were introduced by the American scientist $Benjamin$ $Franklin$.
This naming convention is analogous to mathematical numbers,where adding a positive number to a negative number of the same magnitude results in a sum of zero. Similarly,when equal amounts of positive and negative charges are combined,they neutralize each other.
Based on this convention,an electron is defined as having a negative charge.