The difference between Anchor and Drop anchor

Anchor as a noun (nautical):

A tool used to moor a vessel to the bottom of a sea or river to resist movement.

Anchor as a noun (nautical):

An iron device so shaped as to grip the bottom and hold a vessel at her berth by the chain or rope attached. (FM 55-501).

Anchor as a noun (nautical):

The combined anchoring gear (anchor, rode, bill/peak and fittings such as bitts, cat, and windlass.)

Anchor as a noun (heraldiccharge):

Representation of the nautical tool, used as a heraldic charge.

Anchor as a noun:

Any instrument serving a purpose like that of a ship's anchor, such as an arrangement of timber to hold a dam fast; a device to hold the end of a bridge cable etc.; or a device used in metalworking to hold the core of a mould in place.

Anchor as a noun (Internet):

A marked point in a document that can be the target of a hyperlink.

Anchor as a noun (television):

An anchorman or anchorwoman.

Anchor as a noun (athletics):

The final runner in a relay race.

Anchor as a noun (archery):

A point that is touched by the draw hand or string when the bow is fully drawn and ready to shoot.

Anchor as a noun (economics):

A superstore or other facility that serves as a focus to bring customers into an area.

Anchor as a noun (figurative):

That which gives stability or security.

Anchor as a noun (architecture):

A metal tie holding adjoining parts of a building together.

Anchor as a noun (architecture):

Carved work, somewhat resembling an anchor or arrowhead; part of the ornaments of certain mouldings. It is seen in the echinus, or egg-and-anchor (called also egg-and-dart, egg-and-tongue) ornament.

Anchor as a noun:

One of the anchor-shaped spicules of certain sponges.

Anchor as a noun:

One of the calcareous spinules of certain holothurians, as in species of Synapta.

Anchor as a noun (cartomancy):

The thirty-fifth Lenormand card.

Anchor as a noun (obsolete):

An anchorite or anchoress.

Anchor as a verb:

To connect an object, especially a ship or a boat, to a fixed point.

Anchor as a verb:

To cast anchor; to come to anchor.

Anchor as a verb:

To stop; to fix or rest.

Anchor as a verb:

To provide emotional stability for a person in distress.

Anchor as a verb:

To perform as an anchorman or anchorwoman.

Anchor as a verb:

To be stuck; to be unable to move away from a position.

Drop anchor as a verb (nautical):

To release the anchor of a ship or boat, allowing it to fall to the bed of a body of water and thereby securing the vessel in place.

Drop anchor as a verb (euphemistic):

To release feces into a toilet etc.f: to defecate.