Wording For New Baby Congratulations English Language Independant Investigation Help? -word Classes Ect.?

English Language Independant Investigation help? -word classes ect.? - wording for new baby congratulations

Hello everyone,
You wonder if you could some help for my investigaation English. I'm basically something very dulll and study the language in which cards to "Baby" (couldnt think of nothing else).

My mind has become completely empty first in a series of things:

What is that word "Congratulations"? (eg, name, adjective, adverb) of the EC Treaty.

Secondly, any idea why "new baby cards are" used in relation to flowers, "his daughter in the pink flower?

Why would you say religion reference
"They have blessed"

A big thank you!
xx