Verb

1. spend or use time
2. work in a specific place, with a specific subject, or in a specific function
3. have an existence, be extant
4. have the quality of being; (copula, used with an adjective or a predicate noun)
5. have life, be alive
6. be identical to; be someone or something
7. form or compose
8. occupy a certain position or area; be somewhere
9. be identical or equivalent to
10. represent, as of a character on stage
11. be priced at
12. to remain unmolested, undisturbed, or uninterrupted -- used only in infinitive form
13. happen, occur, take place

Noun

1. a light strong brittle grey toxic bivalent metallic element