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"Paz" is a form of "paz", a noun which is often translated as "peace". "Salvo" is a form of "salvo", an adjective which is often translated as "safe". Learn more about the difference between "paz" and "salvo" below.
la paz()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
salvo()
An adjective is a word that describes a noun (e.g., the big dog).
1. (unharmed)
a. safe
El gatito está sano y salvo dentro de la cesta.The kitten is safe and sound inside the basket.
A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
2. (apart from)
a. except
Nunca nos vamos de vacaciones, salvo a la casa de mis abuelos.We never go on vacation, except to my grandparent's house.
b. except for
Todos estaban entusiasmados por tomar un crucero, salvo Eduardo.Everyone was excited about taking a cruise, except for Eduardo.