charge vs porterage

charge and porterage both are nouns.

Word	Noun	Adjective	Verb	Adverb
charge	Yes	No	Yes	No
porterage	Yes	No	No	No

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

charge (noun)	porterage (noun)
attention and management implying responsibility for safety	the transportation of burdens by porters
an impetuous rush toward someone or something	the charge for carrying burdens by porters
a special assignment that is given to a person or group
a quantity of explosive to be set off at one time
heraldry consisting of a design or image depicted on a shield
(criminal law) a pleading describing some wrong or offense
a formal statement of a command or injunction to do something
request for payment of a debt
an assertion that someone is guilty of a fault or offence
the swift release of a store of affective force
(psychoanalysis) the libidinal energy invested in some idea or person or object
a person committed to your care
the quantity of unbalanced electricity in a body (either positive or negative) and construed as an excess or deficiency of electrons
financial liabilities (such as a tax)
the price charged for some article or service

charge (verb)	porterage (verb)
energize a battery by passing a current through it in the direction opposite to discharge
cause formation of a net electrical charge in or on
saturate
attribute responsibility to
set or ask for a certain price
file a formal charge against
impose a task upon, assign a responsibility to
blame for, make a claim of wrongdoing or misbehavior against
make an accusatory claim
instruct or command with authority
instruct (a jury) about the law, its application, and the weighing of evidence
to make a rush at or sudden attack upon, as in battle
direct into a position for use
fill or load to capacity
provide (a device) with something necessary
place a heraldic bearing on
cause to be agitated, excited, or roused
move quickly and violently
lie down on command, of hunting dogs
pay with a credit card; pay with plastic money; postpone payment by recording a purchase as a debt
enter a certain amount as a charge
demand payment
give over to another for care or safekeeping
cause to be admitted; of persons to an institution
assign a duty, responsibility or obligation to