Usage of "inquieto"
How do one use the word "inquieto"? As I have understood it, it can mean:
1) 'worried', and it is then used together with 'estar' and typically placed after the noun it refers to.
Ex. Estoy inquieta. El chico inquieto no quiere hacer el examen.
2) 'enterprising', and is then used together with 'ser'. Is it typically placed after the noun too? And in that case, do you have to understand that one mean 'enterprising' and not 'worried' from the context?
3) 'lively', and is the used together with 'ser' and is placed *before* the noun.
Ex. Tengo un inquieto perro.
4) 'restless'. Is this used together with 'ser' and is also placed before the noun? Do one say: Tengo las inquietas piernas?