The difference between Rolling stock and Stock

Rolling stock as a noun (railroads, uncountable, collectively):

All vehicles that move on a railway, powered or unpowered.

Rolling stock as a noun (countable, less common):

Any such vehicle.

Stock as a noun (operations):

A store or supply. A store of goods ready for sale; inventory. A supply of anything ready for use. Railroad rolling stock. A stack of undealt cards made available to the players. Farm or ranch animals; livestock. The population of a given type of animal (especially fish) available to be captured from the wild for economic use.

Stock as a noun (finance):

The capital raised by a company through the issue of shares. The total of shares held by an individual shareholder. The price or value of the stock for a company on the stock market. The measure of how highly a person or institution is valued. Any of several types of security that are similar to a stock, or marketed like one.

Stock as a noun (cooking, uncountable, countable):

The raw material from which things are made; feedstock. Broth made from meat (originally bones) or vegetables, used as a basis for stew or soup. The type of paper used in printing. Undeveloped film; film stock. Plain soap before it is coloured and perfumed.

Stock as a noun:

Stock theater, summer stock theater.

Stock as a noun (horticulture):

The trunk and woody main stems of a tree. The base from which something grows or branches. The plant upon which the scion is grafted. lineage, family, ancestry. # A larger grouping of language families: a superfamily or macrofamily.

Stock as a noun:

Any of the several species of cruciferous flowers in the genus Matthiola.

Stock as a noun (firearm):

A handle or stem to which the working part of an implement or weapon is attached. The part of a rifle or shotgun that rests against the shooter's shoulder. The handle of a whip, fishing rod, etc.

Stock as a noun:

Part of a machine that supports items or holds them in place. The headstock of a lathe, drill, etc. The tailstock of a lathe.

Stock as a noun (nautical):

A bar, stick or rod. A ski pole. A bar going through an anchor, perpendicular to the flukes. The axle attached to the rudder, which transfers the movement of the helm to the rudder. A pipe (vertical cylinder of ore)

Stock as a noun:

A type of (now formal or official) neckwear. A necktie or cravat, particularly a wide necktie popular in the eighteenth century, often seen today as a part of formal wear for horse riding competitions. A piece of black cloth worn under a clerical collar.

Stock as a noun:

A bed for infants; a crib, cot, or cradle

Stock as a noun (folklore):

A piece of wood magically made to be just like a real baby and substituted for it by magical beings.

Stock as a noun (obsolete):

A cover for the legs; a stocking.

Stock as a noun:

A block of wood; something fixed and solid; a pillar; a firm support; a post.

Stock as a noun (by extension, obsolete):

A person who is as dull and lifeless as a stock or post; one who has little sense.

Stock as a noun (UK, historical):

The longest part of a split tally stick formerly struck in the exchequer, which was delivered to the person who had lent the king money on account, as the evidence of indebtedness.

Stock as a noun (shipbuilding, in the plural):

The frame or timbers on which a ship rests during construction.

Stock as a noun (UK, in the plural):

Red and grey bricks, used for the exterior of walls and the front of buildings.

Stock as a noun (biology):

In tectology, an aggregate or colony of individuals, such as as trees, chains of salpae, etc.

Stock as a noun:

The beater of a fulling mill.

Stock as a verb:

To have on hand for sale.

Stock as a verb:

To provide with material requisites; to store; to fill; to supply.

Stock as a verb:

To allow (cows) to retain milk for twenty-four hours or more prior to sale.

Stock as a verb:

To put in the stocks as punishment.

Stock as a verb (nautical):

To fit (an anchor) with a stock, or to fasten the stock firmly in place.

Stock as a verb (card games, dated):

To arrange cards in a certain manner for cheating purposes; to stack the deck.

Stock as an adjective:

Of a type normally available for purchase/in stock.

Stock as an adjective (racing, of a race car):

Having the same configuration as cars sold to the non-racing public, or having been modified from such a car.

Stock as an adjective:

Straightforward, ordinary, just another, very basic.

Stock as a noun:

A thrust with a rapier; a stoccado.