The difference between Litter and Sedan

Litter as a noun (countable):

A platform mounted on two shafts, or a more elaborate construction, designed to be carried by two (or more) people to transport one (in luxury models sometimes more) third person(s) or (occasionally in the elaborate version) a cargo, such as a religious idol.

Litter as a noun (collective, countable):

The offspring of a mammal born in one birth.

Litter as a noun (uncountable):

Material used as bedding for animals.

Litter as a noun (uncountable):

Collectively, items discarded on the ground.

Litter as a noun (uncountable):

Absorbent material used in an animal's litter tray

Litter as a noun (uncountable):

Layer of fallen leaves and similar organic matter in a forest floor.

Litter as a noun:

A covering of straw for plants.

Litter as a verb (intransitive):

To drop or throw trash without properly disposing of it (as discarding in public areas rather than trash receptacles).

Litter as a verb (transitive):

To scatter carelessly about.

Litter as a verb (transitive):

To strew (a place) with scattered articles.

Litter as a verb (transitive):

To give birth to, used of animals.

Litter as a verb (intransitive):

To produce a litter of young.

Litter as a verb (transitive):

To supply (cattle etc.) with litter; to cover with litter, as the floor of a stall.

Litter as a verb (intransitive):

To be supplied with litter as bedding; to sleep or make one's bed in litter.

Sedan as a noun:

An enclosed windowed chair suitable for a single occupant, carried by at least two porters, in equal numbers in front and behind, using wooden rails that passed through metal brackets on the sides of the chair.

Sedan as a noun (US, Australia, Canada, New Zealand):

An automobile designed in a configuration with separate compartments for engine space, driver/passenger space and luggage space.

Sedan as a noun:

A handbarrow for transporting fish.