bi

As a noun null is

zero, nil; the cardinal number before einn.

As a letter s

is the letter s with a.

As a noun ge is

gee.

As a verb uni

is to unite, join, link.

As a verb ai

is (also imperfect tense in the literary language).

As a noun bismuth is

a chemical element (symbol bi) with an atomic number of 83.

As a verb torture

is .

As adjectives the difference between bi and pi

is that bi is bisexual while pi is not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type.

As nouns the difference between bi and pi

is that bi is a type of jade disk produced in ancient China while pi is the name of the sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.

As a verb pi is

to spill or mix printing type. Also, "to pie".

As an abbreviation pi is

pica (conventionally, 12 points = 1 pica, 6 picas = 1 inch.

As an initialism PI is

initialism of partial induction|lang=en see AI.