This is the 4789th most frequent Chinese word.
结婚
"结婚" means "to get married."
Here, '结婚' is used as a verb meaning 'to get married' to describe the action the couple plans to take.
他们打算明年结婚。
They plan to get married next year.
In this sentence, '结婚' is used as a noun representing the concept or institution of marriage.
结婚是人生的重要阶段。
Marriage is an important stage in life.
'结婚' in this sentence still means 'to get married', but it's framed as the purpose for their preparations, showing its use in describing intent.