den

As a noun cellars is

.

Fissure is a related term of den.

As a verb fissure

is .

Interstice is a related term of den.

As a noun interstice

is a small opening or space between objects, especially adjacent objects or objects set closely together, as between cords in a rope or components of a multiconductor electrical cable or between atoms in a crystal.

Perforation is a related term of den.

As a noun perforation

is the act of perforating or the state of being perforated.

As a noun haven is

a harbour or anchorage protected from the sea.

As a verb haven is

to put into, or provide with a haven.

As a verb reject

is to refuse to accept.

As a noun reject

is something that is rejected.

As a verb carve

is (archaic) to cut.

As a noun carve

is (obsolete) a carucate.

As nouns the difference between den and borrow

is that den is a small cavern or hollow place in the side of a hill, or among rocks; especially, a cave used by a wild animal for shelter or concealment while borrow is deviation of the path of a rolling ball from a straight line; slope; slant.

As verbs the difference between den and borrow

is that den is to ensconce or hide oneself in (or as in) a den while borrow is to receive (something) from somebody temporarily, expecting to return it.

As proper nouns the difference between den and borrow

is that den is a diminutive of the male given name Dennis while Borrow is {{surname}.

As an abbreviation den

is abbreviation of lang=en (a unit of weight.

As a noun stash is

a collection, sometimes hidden; a reserve.

As a verb stash is

to hide or store away for later use.