This is the 4423rd most frequent Japanese word.
土木
Civil engineering.
Here, "土木" refers to the academic field of civil engineering, highlighting specialized study and knowledge of the subject in a university setting.
彼は土木工学を専攻しています。
He is majoring in civil engineering.
In this instance, "土木" pertains to public works and construction tasks related to civil structures, emphasizing the operational aspect.
その会社は土木建設を行っています。
That company performs civil construction.
"土木" here is related to the profession within the industry of civil engineering, underscoring the career-oriented application of the term.