Cases of word usage

1) the state or quality of containing acid (acidity)

2) the quality of considering the well-being and happiness of others before yourself (altruism)

3) the general character or quality in a place; atmosphere (the more usual word) (ambience)

4) to judge the value, worth, quality of (something) (appraise)

5) a quality considered to belong naturally or necessarily to a person or thing (attribute)

6) the quality of being genuine (authenticity)

7) written works (especially essays, poetry) valued because of the style or artistic quality and not the factual contents (belleslettres)

8) most superior in quality (of a group) (best)

9) superior in quality (to others) (better)

10) the quality of expressing an unpleasant opinion honestly (candour)