Trust
Belief
Synonyms: Confidence, faith, sureness, certitude, conviction, reliance, belief, freedom from suspicion/doubt, certainty, assurance, and credence.
Keeping
Synonyms: Safe keeping, protection, care, trusteeship, keeping, charge, custody, and guardianship.
Have faith in
Synonyms: Have faith in, have (every) confidence in, pin one's hopes/faith on, depend on, count on, be convinced by, confide in, put/place one's trust in, believe in, rely on, bank on, be sure of, and swear by.
Consign
Hope
Example Sentences
Trust is earned over time.
She trusts her closest friends.
Trust builds strong, lasting relationships.
Mutual trust leads to success.