mark vs code

mark and code both are nouns.

Word	Noun	Adjective	Verb	Adverb
mark	Yes	No	Yes	No
code	Yes	No	Yes	No

As nouns, code is a hyponym of mark; that is, code is a word with a more specific, narrower meaning than mark:

mark: a distinguishing symbol
code: a series of letters, numbers or symbols assigned to something for the purpose of classification or identification

As verbs, code is a hyponym of mark; that is, code is a word with a more specific, narrower meaning than mark:

Other hyponyms of mark include brand, brandmark, trademark, point, point, point, calibrate, badge, favorite, favourite.

mark (noun)	code (noun)
something that exactly succeeds in achieving its goal	a coding system used for transmitting messages requiring brevity or secrecy
an indication of damage	a set of rules or principles or laws (especially written ones)
a marking that consists of lines that cross each other	(computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions
the impression created by doing something unusual or extraordinary that people notice and remember	a series of letters, numbers or symbols assigned to something for the purpose of classification or identification
a number or letter indicating quality (especially of a student's performance)
a written or printed symbol (as for punctuation)
a symbol of disgrace or infamy
a distinguishing symbol
a visible indication made on a surface
a reference point to shoot at
a perceptible indication of something not immediately apparent (as a visible clue that something has happened)
a person who is gullible and easy to take advantage of
formerly the basic unit of money in Germany

mark (verb)	code (verb)
make or leave a mark on	convert ordinary language into code
insert punctuation marks into	attach a code to
assign a grade or rank to, according to one's evaluation
celebrate by some ceremony or observation
put a check mark on or near or next to
be a distinctive feature, attribute, or trait; sometimes in a very positive sense
make underscoring marks
remove from a list
designate as if by a mark
establish as the highest level or best performance
make small marks into the surface of
mark with a scar
attach a tag or label to
notice or perceive
to accuse or condemn or openly or formally or brand as disgraceful