Sap is a general term for referring to a slightly liquid liquid to a viscous out of plant or animal organ (natural sap) or machine system residue. Sap generally hardened after some time due to condensation.
In plants, sap is anything that is slightly liquid to thick out of stems, leaves, flowers, or wounded fruits; it is not distinguished whether the liquid is a nutrient fluid from filter vessels or liquids containing many secondary metabolites from latex vessels or resin vessels. For plants, the function of liquids is as a means of self-defense or wound treatment.
