As nouns the difference between articulation and joints

is that articulation is (countable|or|uncountable) a joint or the collection of joints at which something is articulated, or hinged, for bending while joints is .

As nouns the difference between core and spearhead

is that core is crow while spearhead is the pointed head, or end, of a spear.

As a verb spearhead is

to drive or campaign ardently for, as an effort, project, etc.

As a noun union

is union (action and result).

As a verb collaborate is

to work together with others to achieve a common goal.

As a noun products

is .

As an adjective ardent is

full of ardor; fervent, passionate.

As verbs the difference between trouble and caring

is that trouble is while caring is .

As an adjective caring is

(of a person) kind, sensitive, empathetic.

As a noun caring is

the act of one who cares.

As an adjective sudden

is happening quickly and with little or no warning.

As an adverb sudden

is (poetic) suddenly.

As a noun sudden

is (obsolete) an unexpected occurrence; a surprise.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As nouns the difference between vibrant and charm

is that vibrant is trill while charm is an object, act or words believed to have magic power or charm can be the mixed sound of many voices, especially of birds or children.

As a verb charm is

to seduce, persuade or fascinate someone or something.

As verbs the difference between parody and paraphrase

is that parody is to make a parody of something while paraphrase is .

As a noun parody

is a work or performance that imitates another work or performance with ridicule or irony.

As nouns the difference between greatness and madness

is that greatness is the state, condition, or quality of being great; as, greatness of size, greatness of mind, power, etc while madness is the state of being mad; insanity; mental disease.