Which word is used for the bottom of a hollow thing, such as a box; or for the bottom of a body of water; or for a background?

A "Titulo de Bachiller" is a(n):

La bandita elástica está atrás del libro.

Spanish for "clumsy" :

The most likely colloquial translation for "Me cae mal ese tipo" is:

You see the word “fallecido” in parentheses next to a name on a personal certificate. This person:

Which word is used for the bottom of a hollow thing, such as a box; or for the bottom of a body of water; or for a background?

"Ella está embarazada" significa "she is embarrassed".