This is the 7996th most frequent Japanese word.
天国
"Heaven" or "paradise."
Here, '天国' is used to refer to the spiritual or religious concept of heaven as a place of perfection and beauty.
天国はとても美しい場所だと言われています。
Heaven is said to be a very beautiful place.
In this sentence, '天国' metaphorically describes a state of great happiness or bliss.
彼の笑顔を見て、天国にいるような気持ちになりました。
Seeing his smile made me feel as though I were in heaven.
'天国' is utilized as part of a comparison, representing a positive extreme, in contrast to '地獄' (hell).