As adjectives the difference between credible and identical

is that credible is credible while identical is (not comparable) bearing full likeness by having precisely the same set of characteristics; indistinguishable.

As a noun identical is

(usually|pluralized|chiefly|philosophy) something which has exactly the same properties as something else.

As nouns the difference between do and old

is that do is the bright time of the day (chiefly in adverbial constructions) while old is age.

As nouns the difference between appellation and demonym

is that appellation is or designation while demonym is a name for an inhabitant or native of a specific place that is derived from the name of the place.

As verbs the difference between illuminate and lightening

is that illuminate is to shine light on something while lightening is present participle of lang=en.

As nouns the difference between illuminate and lightening

is that illuminate is someone thought to have an unusual degree of enlightenment while lightening is the sensation caused by the descent of the uterus into the pelvic cavity before the onset of labour.

As an adjective illuminate

is enlightened.

As verbs the difference between fetching and loading

is that fetching is present participle of lang=en while loading is present participle of lang=en.

As nouns the difference between fetching and loading

is that fetching is the act by which something is fetched while loading is the action of the verb to load.

As an adjective fetching

is attractive; pleasant to regard.

As verbs the difference between thank and educate

is that thank is to express gratitude or appreciation to someone while educate is to instruct or train.

As a noun thank

is (obsolete) an expression of appreciation; a thought.

As nouns the difference between honor and admiration

is that honor is while admiration is wonder mingled with approbation or delight; an emotion excited by a person or thing possessed of wonderful or high excellence; as, admiration of a beautiful woman, of a landscape, of virtue.

As adjectives the difference between frivolous and apathetic

is that frivolous is silly, especially at an inappropriate time or in an inappropriate manner while apathetic is void of feeling; not susceptible of deep emotion; passionless; indifferent.

As nouns the difference between runes and hieroglyphs

is that runes is plural of lang=en while hieroglyphs is plural of hieroglyph.

As nouns the difference between genealogy and nationality

is that genealogy is (countable) the descent of a person, family, or group from an ancestor or ancestors; lineage or pedigree while nationality is membership of a particular nation or state, by origin, birth, naturalization, ownership, allegiance or otherwise.