You are right, Godswill about the definition of 'Support and Resistance' but not completely right.
You can't talk about 'Support and Resistance' in Forex Trade without mentioning ' FLOOR, CEILING and STOP as these variables act as oppositions to each other.
While , 'Support' is the price FLOOR where buying interest STOPS the price from falling further.
'Resistance' on the other hand, is the price CEILING where selling pressure STOPS the price from rising .
Traders usually buy at Support and sell at Residence, expecting the price to bounce within this range.