'Sleep' is an abstract noun since it refers to a condition or state.
Yes, because it is the state of being asleep. The noun sleep itself is an abstract noun.
The abstract noun form of the adjective brave are braveness.A related abstract noun is bravery.
An abstract noun related to the noun 'neighbor' is neighborliness.
The abstract noun for the adjective strong is strongness.A related abstract noun is strength.
The abstract noun is criticism.
The abstract noun form is tourism.
An abstract noun related to the concrete noun 'neighbor' is neighborliness.
The abstract noun form related to the noun 'politician' is politics.
The abstract noun form of the adjective 'imaginative' is imaginativeness.A related abstract noun is imagination.
The abstract noun form of the adjective 'intuitive' is intuitiveness.A related abstract noun is intuition.
The abstract noun form of the verb to disable is disablement.A related abstract noun is disability.