What are Tears?
It is clear salty solution secreted by the lacrimal glands that lubricates and cleanses the surface of the eyeball and inner surface of the eyelids.
Lacrimation is the secretion of tears, especially in excess. When a person is in an emotional state such as happiness, sorrow, or anger, the lacrimation in the eyes increases and produces tears which we call crying.
Tears are that part of lacrimation that clean and lubricate the eyes. Lacrimation or lachrymation (from Latin lacrima, meaning "tear") is the production or shedding of tears.
Strong emotions such as sorrow, elation, awe and pleasure, as well as irritation of the eyes, laughing, and yawning may lead to an increased production of tears, or crying.