A great question asked by first-time home buyers. "Why do I need both; are they not the same?"
Do not let the word HOME fool you into thinking they are. Although they both have one thing in common - HOME - they are different as cats and dogs.
Home Appraisal - By definition, "An appraisal is a licensed appraiser's opinion of a home's market value based on comparable recent sales of homes in the neighborhood. Appraisals are usually ordered on behalf of a buyer's lender to protect the interests of the lender. The lender's underwriters will compare the appraisal price to the final purchase price of the home to ensure the buyer is not borrowing more than the house is worth." (Redfin)
As you can see a home appraisal deals with the value of your prospective home as it relates to recent sales within the similar locale.
Home Inspection - By definition, "A Home Inspection is a non-invasive visual examination of a residential dwelling, performed for a fee, which is designed to identify observed material defects within specific components of said dwelling. Components may include any combination of mechanical, structural, electrical, plumbing, or other essential systems or portions of the home, as identified and agreed to by the Client and Inspector, prior to or during the inspection process." (Paul Willig, Member of The National Association of Certified Home Inspectors)
The emphasis of the home inspection is the condition of the house and notes items that may affect the asking price of the house.
Both the Home Inspection and the Home Appraisal serve the potential home buyer well enabling them to determine if this house is worth their investment.