Despite the similar names, they are very different. A trust is a legal arrangement for wealth protection and succession, not a pooled investment fund.
Nature
Trust: A legal arrangement for holding and managing assets
Unit Trust (Mutual Fund): An investment product that pools investors' money
Structure
Trust: Settlor → Trustee → Beneficiary
Unit Trust (Mutual Fund): Investor → Fund Management Company → Investment Portfolio
Primary purpose
Trust: Wealth protection, estate and succession planning, asset preservation, reducing family disputes
Unit Trust (Mutual Fund): Portfolio diversification, professional investment management, capital appreciation and income
Assets held
Trust: Cash, real estate, shares and securities, insurance policies, private company shares
Unit Trust (Mutual Fund): Pooled capital invested in equities, bonds, REITs and money market instruments
Common examples
Trust: Family Trust, Children's Education Trust, Business Shareholding Trust, Estate Planning Trust
Unit Trust (Mutual Fund): Regulated unit trust funds offered by fund management companies
Key focus
Trust: Wealth preservation, asset protection and legacy planning
Unit Trust (Mutual Fund): Investment returns with exposure to market risk