Dilute
Part of speech: verb
Definition: To make thinner by adding solvent to a solution; especially by adding water. To weaken, especially by adding a foreign substance. To cause the value of individual shares to decrease by increasing the total number of shares.
Part of speech: adjective
Definition: Having a low concentration. Weak; reduced in strength due to dilution, diluted.
Reduce
Part of speech: verb
Definition: To bring down the size, quantity, value or intensity of something; to diminish, to lower, to impair.To lose weight.To bring to an inferior rank; to degrade, to demote.To humble; to conquer; to subdue; to capture.To bring to an inferior state or condition.To decrease the liquid content of food by boiling much of its water off.To add electrons / hydrogen or to remove oxygen.To produce metal from ore by removing nonmetallic elements in a smelter.To simplify an equation or formula without changing its value.To convert to written form (Usage note: this verb almost always take the phrase "to writing").
Example sentence: The only way we can reduce the number of these endangered species is to improve and provide additional habitat where they can live and reproduce.