vs 

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"Estoy loco por ti" is a phrase which is often translated as "I'm mad about you", and "Lupita" is a proper noun which is often translated as "Lupita". Learn more about the difference between "estoy loco por ti" and "Lupita" below.
estoy loco por ti(
ehs
-
toy
 
loh
-
koh
 
pohr
 
tee
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
1.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(general)
a. I'm mad about you
Jamás amé a nadie de esta manera. Estoy loco por ti.I've never loved anyone like this before. I'm mad about you.
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Lupita(
loo
-
pee
-
tah
)
A proper noun refers to the name of a person, place, or thing.
proper noun
a. Lupita
Mis mejores amigas son Clara y Lupita.My best friends are Clara and Lupita.
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