As nouns the difference between string and metastring

is that string is thong (as undergarment or swimwear) while metastring is (computing|rare) a string of characters used as a placeholder for a variable data item.

As nouns the difference between character and metastring

is that character is while metastring is (computing|rare) a string of characters used as a placeholder for a variable data item.

As nouns the difference between placeholder and metastring

is that placeholder is something used or included temporarily or as a substitute for something that is not known or must remain generic; that which holds, denotes or reserves a place for something to come later while metastring is (computing|rare) a string of characters used as a placeholder for a variable data item.

As a noun sorrow

is (uncountable) unhappiness, woe.

As a verb sorrow

is to feel or express grief.

As an adjective ruthful is

full of sorrow; sorrowful; woeful; rueful.

As adjectives the difference between woeful and ruthful

is that woeful is full of woe; sorrowful; distressed with grief or calamity while ruthful is full of sorrow; sorrowful; woeful; rueful.

As a noun pity

is (uncountable) a feeling of sympathy at the misfortune or suffering of someone or something.

As a verb pity

is to feel pity for (someone or something).

As an interjection pity

is short form of what a pity.

As an adjective ruthful is

full of sorrow; sorrowful; woeful; rueful.

As adjectives the difference between piteous and ruthful

is that piteous is pitiful; evincing pity, compassion, or sympathy while ruthful is full of sorrow; sorrowful; woeful; rueful.

Ruthful is a synonym of merciful.

As adjectives the difference between merciful and ruthful

is that merciful is showing mercy while ruthful is full of sorrow; sorrowful; woeful; rueful.

As nouns the difference between female and warrioress

is that female is one of the female (feminine) sex or gender while warrioress is (rare) a female warrior.

As an adjective female

is belonging to the sex which typically produces eggs, which in humans and most other mammals is typically the one which has xx chromosomes; belonging to the sex which has larger gametes (for species which have two sexes and for which this distinction can be made).

As nouns the difference between warrior and warrioress

is that warrior is a person who is actively engaged in battle, conflict or warfare; a soldier or combatant while warrioress is (rare) a female warrior.