Molarity is the measure of the concentration of a solution, which refers to the number of moles of solute per liter of solution. Synonyms for molarity include concentration, strength, density, and abundance. In chemical contexts, the term "concentration" is used as a synonym for molarity rather frequently. The term "strength" is also regularly used to define molarity, such as when a saltwater solution is defined by its proportion of salt in water. The word "density" may not be used very often to define molarity, but it can be relevant when dealing with solutions that have a very high concentration of solute. Finally, "abundance" can be used when discussing the prevalence of a solute in a solution.