Theory:

A common noun is a generic name for a person, place or thing in a class or group. Common nouns can be concrete, abstract or collective.
An abstract noun is an intangible concept includes liberty, anger, freedom, love, generosity, charity, and democracy. Notice that these nouns express ideas, concepts, or qualities that cannot be seen or experienced. We cannot see, hear, touch, taste, or smell these concepts.
Collective nouns are names for an assemblage of a number of people, animals or things. Words like bunch, pride, flock and swarm are collective nouns.   
Noun forms from the words from "How The Dog Found Himself a Master!":
 
Numbers
Words
Noun form
1.
FreeFreedom.
2.
MooMooing.
3.
FaithFaithful.
4.
StrongStrength.
5.
ComplainComplaint.
6.
StayStay.
7.
DartDarts.
8.
AngryAnger.
9.
OffendOffence.
10.
AgreeAgreement.
11.
LoyalLoyalty.
 
Important!
  • Click here to know more about common nouns.
  • Click here to know more about abstract nouns.
  • Click here to know more about collective nouns.