This is the 944th most frequent Japanese word.
アジア
Asia.
Here, 'アジア' denotes the origin or cultural context of the cuisine being described.
アジア料理はとても多様でおいしいです。
Asian cuisine is very diverse and delicious.
In this usage, 'アジア' indicates the subject theme of his studies.
彼はアジアの歴史について研究しています。
He is studying the history of Asia.
In this sentence, 'アジア' is used to refer to the geographical region known as Asia.