Adjective

Adjetive	Verb	Adverb	Noun
Sad	Be sad	sadly	Sadness
Happy	Be happy	happily	Happiness
Mad	Be mad	madly	Madness
Sick	Be sick	sickly	Sickness
Strange	Be strange	strangely	strangeness

Example :

·      Adjective

Ø  I am very sad

Ø  I was sick because of an accident yesterday

·      Verb

Ø  Don’t  be sad just because your grade is not good

Ø  he might be sick today

·      Adverb

Ø  The fans are madly in love with the actor

Ø  He was be sick last Sunday

·      Noun

Ø  Don't keep the sadness

Ø  Because of his sickness, he didn't come