Do you know a vocabulary, name of a person,place...Basically anything that sounds about like what I tried to write in Latin letters?
If I write two words you have given,
- jin-hee is 진희 or less likely 진히
- jin-hae is 진해
First of all, 진희 a common last name especially for girls. I can't think of other use cases of 진희 other than a person's name.
진해 can be an adjective of 진하다 meaning dark, thick, deep, or strong.
It can also be a name of an administrative district in souther Korea: 진해구 Jinhae-gu. If I heard 진해 without any context, I would come up with the district's name. 진해 is well known for its annual Gunhangje, a cherry blossom festival.