As a noun supporter is

a person who gives support to someone or something.

As nouns the difference between giveaway and souvenir

is that giveaway is something that is given away or handed out for free while souvenir is an item of sentimental value, to remember an event or location.

Thermistor is a related term of varistor.

As nouns the difference between varistor and thermistor

is that varistor is an electronic component having a variable resistance; used to protect circuits against power surges while thermistor is a resistor whose resistance varies rapidly and predictably with temperature and as a result can be used to measure temperature.

As verbs the difference between extend and dilate

is that extend is to increase in extent while dilate is .

As an adjective mercantile is

(economics) concerned with the exchange of goods for profit.

As nouns the difference between stumble and totter

is that stumble is a fall, trip or substantial misstep while totter is an unsteady movement or gait.

As verbs the difference between stumble and totter

is that stumble is to trip or fall; to walk clumsily while totter is to walk, move or stand unsteadily or falteringly; threatening to fall.

In lang=en terms the difference between behold and descry

is that behold is to see, or to look at while descry is to discover (a distant or obscure object) by the eye; to espy; to discern or detect.

As verbs the difference between behold and descry

is that behold is to see, or to look at while descry is to see.

As an adjective churlish

is of or pertaining to a serf, peasant, or rustic.

As a noun curmudgeon is

a miser.

As adjectives the difference between renascent and resurgent

is that renascent is experiencing renewed vigor; being reborn while resurgent is undergoing a resurgence; experiencing renewed vigor or vitality.

As a noun resurgent is

one who rises again, as from the dead.

As verbs the difference between replace and subscribe

is that replace is while subscribe is (ergative) to sign up to have copies of a publication, such as a newspaper or a magazine, delivered for a period of time.