It depends on the age of the mortar.
Today's mortar is made from sand, Portland cement and water. In very cold weather a plasticiser is added.
Prior to about 1900 mortar was made from sand, lime...
Brick and mortar are organisations that operate physically. This is that they have physical stores in which they sell or provides services. Opposed to click and mortar, it is the variation of...
Brick and mortar stores means a customer can go to a real store or outlet and make a purchase. For example, shoe stores where a customer can walk in, buy shoes and leave.
Opposite in a laymen term...