As verbs the difference between undertake and decide

is that undertake is (label) to take upon oneself; to start, to embark on (a specific task etc) while decide is .

As verbs the difference between tangled and twined

is that tangled is (tangle) while twined is (twine).

As nouns the difference between tangle and twin

is that tangle is a tangled twisted mass or tangle can be any large type of seaweed, especially a species of laminaria while twin is (baseball) a player that plays for the.

As a verb tangle

is to become mixed together or intertwined.

As nouns the difference between tide and inflow

is that tide is time while inflow is the act or process of flowing in or into.

As a verb inflow is

to flow in.

In lang=en terms the difference between encounter and stumble

is that encounter is to confront (someone or something) face to face while stumble is to cause to stumble or trip.

As verbs the difference between encounter and stumble

is that encounter is to meet (someone) or find (something) unexpectedly while stumble is to trip or fall; to walk clumsily.

As nouns the difference between encounter and stumble

is that encounter is an unplanned or unexpected meeting while stumble is a fall, trip or substantial misstep.

As adjectives the difference between roaring and thundering

is that roaring is very; intensively; extremely while thundering is of, pertaining to, or accompanied by thunder.

As verbs the difference between roaring and thundering

is that roaring is while thundering is .

As nouns the difference between roaring and thundering

is that roaring is a loud, deep, prolonged sound, as of a large beast; a roar while thundering is (archaic) thunderstorm.

As nouns the difference between pcr and naat

is that pcr is polymerase chain reaction while naat is (islam) poetry in praise of the prophet muhammad.

As a verb pcr

is to perform a polymerase chain reaction.

As nouns the difference between anacronyms and anacronym

is that anacronyms is plural of anacronym while anacronym is an acronym the original meaning of which is not known to most speakers.

As an adverb basically

is in a fundamental, essential or basic manner.

As an adjective based is

founded on; having a basis; often used in combining forms.

As a verb based is

(base).

As nouns the difference between fiber and roughage

is that fiber is (countable) a single elongated piece of a given material, roughly round in cross-section, often twisted with other fibers to form thread while roughage is dietary fibre.