Ea vs haec

[john abshire]

Ea via centum pedes lata est.
This road is one hundred feet wide.

“ea centum pedes lata est.”
“This is one hundred feet wide.”, or
“Haec centum pedes lata est.”
?
Is “this” in “this road” an adjective or pronoun?
Can ea be used by itself to mean “this”? Or is that only haec?

 

[Pacifica]

Is “this” in “this road” an adjective or pronoun?

In ea via, ea is used as an adjective to via.

Can ea be used by itself to mean “this”?

Yes, it can also be used that way. All demonstratives (hic, iste, ille, is...) can occur either as pronouns on their own or as adjectives together with a noun.