mecha

As a noun mecha

is (anime|manga) a large armoured robot on legs, typically controlled by a pilot seated inside.

As an adjective robotic is

of, relating to, or resembling a robot; mechanical, lacking emotion or personality, etc.

As a proper noun android

is a mobile operating system (os) based on the linux kernel and currently developed by google.

As a noun mecha is

(anime|manga) a large armoured robot on legs, typically controlled by a pilot seated inside.

As an adjective mechanical

is characteristic of someone who does manual labour for a living; coarse, vulgar.

As a noun mecha is

(anime|manga) a large armoured robot on legs, typically controlled by a pilot seated inside.

As a noun mecha

is (anime|manga) a large armoured robot on legs, typically controlled by a pilot seated inside.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between mecha and mega

is that mecha is (anime|manga) a large armoured robot on legs, typically controlled by a pilot seated inside while mega is meg (megabyte).

As an adverb mega is

very.

As nouns the difference between mecha and null

is that mecha is a large armoured robot on legs, typically controlled by a pilot seated inside while null is a non-existent or empty value or set of values.

As an adjective null is

having no validity, "null and void.

As a verb null is

to nullify; to annul.

As nouns the difference between mecha and machine

is that mecha is a large armoured robot on legs, typically controlled by a pilot seated inside while machine is a device that directs and controls energy, often in the form of movement or electricity, to produce a certain effect.

As a verb machine is

to make by machinery.

As nouns the difference between mecha and comedy

is that mecha is a large armoured robot on legs, typically controlled by a pilot seated inside while comedy is archaic Greece. a choric song of celebration or revel.

As nouns the difference between mecha and tech

is that mecha is a large armoured robot on legs, typically controlled by a pilot seated inside while tech is technology.