fiber

As an adjective optical

is of, or relating to sight; visual.

As a noun fiber is

(countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.

In countable|lang=en terms the difference between bulk and fiber

is that bulk is (countable) a cargo or any items moved or communicated in the manner of cargo while fiber is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.

As nouns the difference between bulk and fiber

is that bulk is size, mass or volume while fiber is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.

As an adjective bulk

is being large in size, mass or volume (of goods, etc).

As a verb bulk

is to appear or seem to be, as to bulk or extent.

As nouns the difference between fiber and textile

is that fiber is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread while textile is (usually plural) cloth produced from a fabric.

As an adjective textile is

(naturism) clothing compulsive.

As nouns the difference between lint and fiber

is that lint is a fine material made by scraping cotton or linen cloth; used for dressing wounds while fiber is a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.

As nouns the difference between fiber and finer

is that fiber is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread while finer is one who fines or purifies.

As an adjective finer is

(fine).

As nouns the difference between fixer and fiber

is that fixer is junkie (heroin user) while fiber is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.

As nouns the difference between fiber and firer

is that fiber is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread while firer is a person responsible for firing staff.

As a noun fiber

is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread.

In computing|lang=en terms the difference between fiber and filer

is that fiber is (computing) a kind of lightweight thread of execution while filer is (computing) a software program for managing files.

As nouns the difference between fiber and filer

is that fiber is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread while filer is agent noun of file; one who files something.