This is the 19497th most frequent Korean word.
양구가
"양구가" is not a standard Korean word. It may be a typo or specific context is needed.
In this case, '양구가' identifies Yanggu as the subject about which its popularity with tourists is talked.
양구가 관광객들에게 인기가 많아요.
Yanggu is very popular among tourists.
In this sentence, '양구가' refers to a location called Yanggu, and the sentence describes its state or atmosphere.
양구가 조용하네요.
Yanggu is peaceful.
Here, '양구가' is used to indicate that Yanggu, possibly a community or administrative unit, is the subject conducting activities.