As adjectives the difference between swollen and turgescent

is that swollen is distended while turgescent is becoming turgid or swollen.

As a verb swollen

is .

Turgescence is a derived term of turgescent.

As a noun turgescence

is the act of swelling, or state of being swollen or turgescent.

As an adjective turgescent is

becoming turgid or swollen.

As nouns the difference between instrument and tropometer

is that instrument is while tropometer is an instrument to measure torsion or rotation.

As nouns the difference between torsion and tropometer

is that torsion is twist, twisting while tropometer is an instrument to measure torsion or rotation.

As nouns the difference between rotation and tropometer

is that rotation is rotation while tropometer is an instrument to measure torsion or rotation.

As adjectives the difference between straight and straightish

is that straight is not crooked or bent; having a constant direction throughout its length while straightish is reasonably straight.

As an adverb straight

is of a direction relative to the subject, precisely; as if following a direct line.

As a noun straight

is something that is not crooked or bent.

As a verb straight

is to straighten.

As a noun zealot

is one who is zealous, one who is full of zeal for his own specific beliefs or objectives, usually in the negative sense of being too passionate; a fanatic.

As an adjective zealotic is

in the manner of a zealot; zealous; fanatic.

As nouns the difference between instrument and velometer

is that instrument is while velometer is an instrument that measures the speed of air.

As nouns the difference between air and velometer

is that air is while velometer is an instrument that measures the speed of air.

As nouns the difference between instrument and vibrograph

is that instrument is while vibrograph is an instrument that records vibrations.