Similar words
callado
callado is more about a person being quiet, not talking; silencioso is more general, like a quiet place or a quiet machine.
Similar in other languages
Portuguese
quieto
quieto is the Portuguese word for the same thing — both mean "quiet."
Portuguese
silencioso
silencioso is the Portuguese word for the same thing — both mean "quiet."
Practice
1 What does silencioso mean?
quiet
2 Fill the gap: Es un barrio ___.
Full sentence: Es un barrio silencioso. (It's a quiet neighbourhood.)
3 Which fingerprint chart matches silencioso?
silencioso: neutral register, common frequency, general domain, neutral connotation.