What does "congratulations" mean?

Pronunciation: tong zh tóng hè

Interpretation: Congratulations together.

Make sentences:

Today is the 90th birthday of the Queen Mother. We congratulate her.

We congratulate our best friend on getting married.

We congratulate them on having a child of their own.

We congratulate him on the establishment of his company.

We congratulate him on his successful doctorate.

Generally speaking, there is no income in the dictionary, only congratulations. Congratulation refers to the collective congratulations to people on weddings, birthdays, etc. Instead of just writing "congratulations" on gifts or gift lists.