This is the 8987th most frequent Japanese word.
沸騰
"沸騰" means "boiling" or "coming to a boil."
In this sentence, 沸騰 (futtou) refers to the boiling of water as a physical process.
水が沸騰したらパスタを入れてください。
When the water boils, please add the pasta.
Here, 沸騰 (futtou) is used metaphorically to describe an intensification of interest or attention.
彼の才能に対する注目が沸騰しています。
Attention to his talent is boiling over.
In this example, 沸騰 (futtou) is metaphorically used to describe the passionate escalation of a discussion or argument.