The best translation of "el cristal" is indeed "glass."
The correct phrase to ask where the bathroom is in Spanish is "¿Dónde está el baño?"
The correct translation for "Miss" in Spanish is "Señorita.
"Lavar" is the Spanish word for "wash."
"Perro" is the Spanish word for "dog."
The best translation of "Piedra" is indeed "Stone."
"Hola" is the Spanish word for "hello."
