he

As an initialism aaaa

is (amateur athletic association of america).

As a noun aaaa

is a specific size and configuration of electric battery.

As an adverb he is

now.

As an adverb he

is now.

As a noun cestuy is

(legal) he; the one; the person in question.

Heat is a related term of he.

In uncountable terms the difference between he and heat

is that he is the game of tag, or it, in which the player attempting to catch the others is called "he" while heat is the output of a heating system.

As a pronoun he

is a male person or animal already known or implied.

As an abbreviation HE

is his Excellency, Her Excellency.

As a verb heat is

to cause an increase in temperature of an object or space; to cause something to become hot often with "up".