vs
QUICK ANSWER
"Yo" is a pronoun which is often translated as "I", and "siempre" is an adverb which is often translated as "always". Learn more about the difference between "yo" and "siempre" below.
yo(
yoh
)A pronoun is a word that stands in for a noun (e.g., she).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
3. (psychology)
siempre(
syehm
-
preh
)