Trespass to goods means just interference with the possession not of ownership. A mere taking or aspiration is actionable trespass but every aspiration is not trespass. While trespass is an unlawful taking which may be for the sake of removing the property.
Initially trespass was any wrongful conduct directly causing injury or loss; in modern law trespass is an unauthorized entry upon land. A trespass gives the aggrieved party the right to bring a civil lawsuit and collect damages as compensation for the interference and for any harm suffered.
A person is not guilty of trespass if he goes onto another's land to protect life or property during an emergency. For example, a passerby who sees someone pointing a gun at another person may cross onto the property and subdue the person with the gun.