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QUICK ANSWER
"República Dominicana" is a proper noun which is often translated as "Dominican Republic", and "Puerto Rico" is a proper noun which is often translated as "Puerto Rico". Learn more about the difference between "República Dominicana" and "Puerto Rico" below.
la República Dominicana(
rreh
-
poo
-
blee
-
kah
 
doh
-
mee
-
nee
-
kah
-
nah
)
A proper noun refers to the name of a person, place, or thing.
proper noun
a. Dominican Republic
Haití y la República Dominicana están en la misma isla.Haiti and the Dominican Republic are on the same island.
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Puerto Rico(
pwehr
-
toh
 
rree
-
koh
)
A proper noun refers to the name of a person, place, or thing.
proper noun
a. Puerto Rico
El béisbol es muy popular en Puerto Rico.Baseball is really popular in Puerto Rico.
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