Nouns

(n)appreciation, grasp, holdunderstanding of the nature or meaning or quality or magnitude of something“he has a good grasp of accounting practices”
(n)taste, appreciation, discernment, perceptivenessdelicate discrimination (especially of esthetic values)“arrogance and lack of taste contributed to his rapid success”, “to ask at that particular time was the ultimate in bad taste”
(n)appreciationan expression of gratitude“he expressed his appreciation in a short note”
(n)admiration, appreciationa favorable judgment“a small token in admiration of your works”
(n)appreciationan increase in price or value“an appreciation of 30% in the value of real estate”