Tin
A silvery-white metal (sn)
Ornament
A thing used to make something look more attractive but usually having no practical purpose, especially a small object such as a figurine
Prevalence
The total number of cases of a disease in a given statistical population at a given time
Plumbing
The system of pipes, tanks, fittings and other apparatus required for the water supply, heating, and sanitation in the building
Brittle
Hard but liable to break or shatter easily
Contribute
Give (something, especially money) in order to help achive or provide something
Aesthetic
Concerned with beauty or the appreciation of beauty