Is trusted an abstract noun

The noun 'trust' is an uncountable, abstract noun as a Word for belief in the reliability, truth, ability, or strength of someone or something; a Word for a concept.

The noun 'trust' is a singular, concrete noun as a Word for a legal document; a Word for property held or managed by one person or organization for the benefit of another.

The Word 'trust' is also a verb: trust, trusts, trusting, trusted.