What is the abstract noun for sell enemy avoid?

The Word "sell" is used informally as an abstract noun; a hard sell (aggressive persuasion), a soft sell (gentle persuasion), or a bit of a sell (lacking merit to be sold easily); a Word for a concept; for example:

• That car dealer uses the hard sell to close a deal.

The abstract noun form of the verb to sell is the gerund, selling; for example:

• He has a winning personality, perfect for selling.

The noun 'enemy' is an abstract noun as a Word for something harmful or prejudicial, a Word for a concept; for example:

• Rancor is the enemy of peace.

The noun 'enemy' is a concrete noun when used as a Word for an opposing military force, or a hostile person or country.

The abstract noun forms of the verb to avoid are avoidance and the gerund, avoiding.