As verbs the difference between perseverate and fixate

is that perseverate is describing the behavior, generally displayed by those with various developmental disabilities, of extraordinary, exclusive and lasting obsession to a detail or occurrence others consider minor while fixate is to make something fixed and stable; to fix.

As adverbs the difference between any and ever

is that any is to even the slightest extent, at all while ever is always.

As a determiner any

is at least one; of at least one kind one at all.

As a pronoun any

is any thing(s) or person(s).

As an adjective ever is

(epidemiology) occurring at any time, occurring even but once during a timespan.

As nouns the difference between timeliness and availability

is that timeliness is the state of being timely while availability is the quality of being available.

As an adverb twice

is two times.

As a noun deuce is

(cards) a card with two spots, one of four in a standard deck of playing cards or deuce can be (epithet) the devil, used in exclamations of confusion or anger.

As a proper noun polynesia

is part of oceania including easter island, hawaii, new zealand, and most of the islands between them.

As a noun monogenesis is

(anthropology) the theory that mankind originated with a single ancestor or ancestral couple.

As a noun take

is a fog or mist.

As a verb performed is

(perform).

As verbs the difference between took and performed

is that took is (take) while performed is (perform).

In sciences terms the difference between section and slide

is that section is a thin slice of material prepared as a specimen for research while slide is a flat, rectangular piece of glass on which a prepared sample may be viewed through a microscope.

As nouns the difference between section and slide

is that section is a cutting; a part cut out from the rest of something while slide is an item of play equipment that children can climb up and then slide down again.

As verbs the difference between section and slide

is that section is to cut, divide or separate into pieces while slide is to (cause to) move in continuous contact with a surface.

As verbs the difference between utilise and poop

is that utilise is while poop is to break seawater with the poop of a vessel, especially the poop deck or poop can be (obsolete|intransitive) to make a short blast on a horn or poop can be to tire, exhaust often used with out .

As an adjective utilise

is used, in use.

As a noun poop is

the stern of a ship or poop can be (often|childish) excrement or poop can be a set of data or general information, written or spoken, usually concerning machinery or a process or poop can be a slothful person.

As nouns the difference between intersex and transgender

is that intersex is any of a variety of conditions (in a dioecious species) whereby an individual has male and female sex characteristics while transgender is .

As adjectives the difference between intersex and transgender

is that intersex is (of an individual) having characteristics of both sexes while transgender is (narrowly|of a person) having a gender identity (self-image) which is the opposite of one's physical sex: being physically male but identifying as female, or vice versa.

As a verb transgender is

(lb) to change the gender of; (used loosely) to change the sex of.