As used in this chapter, unless the context requires otherwise:
"Charge" means an admission price or fee asked in return for invitation or permission to enter or go upon the land.
"Invasive species" means any plant, plant pest, noxious weed, microorganism, biological control organism, or animal that can directly or indirectly injure or cause damage to the environment or to the interests of agriculture, horticulture, aquaculture, animal or public health, native species, natural resources, irrigation, or navigation.
"Land" means land, roads, water, watercourses, private ways and buildings, structures, and machinery or equipment when attached to realty, other than lands owned by the government.
"Owner" means the possessor of a fee interest, a tenant, lessee, occupant, or person in control of the premises.