Question

they seemed very anxious about her comfort (use anxious as noun)

Answer 1

they seemed to have anxiety for her comfort.
I hope it helps!

Answer 2

The answer is as follows:

They seemed to have anxiety about her comfort.

• In the given sentence, 'anxious' is given in its adjective form. It is possible, however, to change the form of a word by making a few changes in its spelling and structure.

• 'Anxiety' is the noun form of 'anxious.'

• While 'anxious' is used to describe the behavior of someone, 'anxiety' is the anxious feeling that one is going through.