No. They're entirely different concepts. Felicitations essentially means "best wishes" and subservient means something like "weak-willed, dominated by someone else".
Yes they mean the same thing.
Yes they mean the same thing.
Yes, they can mean the same thing.
No, they are not the same thing. Mean and average are the same thing.
Shabby and different do not mean the same thing.
These two words can mean the same thing.
It can mean the same thing if you use it right:It's a solid source.It's a dependable source.They SOMETIMES can mean the same thing.
Loyal and faithful mean essentially the same thing.
Yes, sanctuary and refuge mean the same thing.
yes grain mean the same thing as particale
There is no correlation between same-sex sexual activity and being a subservient heterosexual housewife.
Yes, it can mean the same thing.