core assets(Definition of core assets: The assets owned by a company that are essential to its ability to generate profitable revenue. An essential, important or valuable property of a business without which a company cannot carry on with its profit-making activities. A business would dissolve without its core assets. ART Vancouver)
core business(The core business of a company is the business that it is primarily in. It is generally considered good for a company to focus on its core business and get rid of other businesses unless it has strong synergies or strategic reasons to justify operating other businesses. Alexander Demidov)