Different ingredients
Mortar consists of sand and cement, while concrete consists of sand, gravel and cement.
Different strength
Mortar strength grades are 5#, 7.5# and 10#, and concrete strength grades are C 10, C 15, C20, C25, C30, C35, C40, C50 and C60.
Different uses
Mortar is mainly used for bonding masonry, and can be used for bricklaying, flaky masonry, block stone, precast concrete block and plastering. Concrete is cast as a whole, forming walls, piers, columns and other components or buildings.
similar
Both mortar and concrete contain cement. Due to the influence of cement quality, there are similarities in pouring and setting time, strength formation and maintenance.