By Jaxson

In geometric measurements, length is the most extended dimension of an object. In the International System of Quantities, length is any quantity with dimension distance. In other contexts, length is a measured dimension of an object. For example, it is possible to cut a length of wire shorter than the wire’s width.

Length may be distinguished from height, which is vertical extent, and width or breadth, which are the distance from side to side, measuring across the object at right angles to the length. Length is a measure of one dimension, whereas area is a measure of two dimensions (length squared) and volume is a measure of three dimensions (length cubed). In most systems of measurement, the unit of length is a base unit, from which other units are derived.

Wikipedia
• Depth (noun)

the vertical distance below a surface; the degree to which something is deep

“Measure the depth of the water in this part of the bay.”

“deepness|lowness”

• Depth (noun)

the distance between the front and the back, as the depth of a drawer or closet

• Depth (noun)

the intensity, complexity, strength, seriousness or importance of an emotion, situation, etc.

“The depth of her misery was apparent to everyone.”

“The depth of the crisis had been exaggerated.”

“We were impressed by the depth of her knowledge.”

• Depth (noun)

lowness

“the depth of a sound”

• Depth (noun)

the total palette of available colors

• Depth (noun)

the property of appearing three-dimensional

“The depth of field in this picture is amazing.”

• Depth (noun)

the deepest part usually of a body of water

“The burning ship finally sunk into the depths.”

• Depth (noun)

a very remote part.

“Into the depths of the jungle…”

“In the depths of the night,”

• Depth (noun)

the most severe part

“in the depth of the crisis”

“in the depths of winter”

• Depth (noun)

the number of simple elements which an abstract conception or notion includes; the comprehension or content

• Depth (noun)

a pair of toothed wheels which work together

• Depth (noun)

the perpendicular distance from the chord to the farthest point of an arched surface

• Depth (noun)

the lower of the two ranks of a value in an ordered set of values

The extent or measure of how broad or wide something is.

A piece of fabric of standard width.