Adjective

Adjective	Verb	Adverb	Noun
Sad	Be sad	sadly	Sadness
Happy	Be happy	happily	happiness
loud	be loud	loudly	loudness
Good	Be good	goodly	Goodness
bad	Be bad	badly	Badness

For example :

Adjective

I am happy

He is good

Verb

I just can’t to be happy

Now, you must to be good

Adverb

I do my homework happily

You do your homework goodly

Noun

To be with you is my happiness

I can feel your goodness