tenacious

As a noun perserverance

is .

As an adjective tenacious is

clinging to an object or surface; adhesive.

Perseverence is likely misspelled.

Perseverence has no English definition.

As an adjective tenacious is

clinging to an object or surface; adhesive.

As adjectives the difference between tenacious and clingy

is that tenacious is clinging to an object or surface; adhesive while clingy is having a tendency to cling.

As adjectives the difference between staunch and tenacious

is that staunch is loyal, trustworthy, reliable, outstanding while tenacious is clinging to an object or surface; adhesive.

As a verb staunch

is to stop the flow of (blood).

As adjectives the difference between headstrong and tenacious

is that headstrong is determined to do as one pleases, and not as others want while tenacious is clinging to an object or surface; adhesive.

As an adjective tenacious

is clinging to an object or surface; adhesive.

As an adverb clingingly is

in a clinging manner; tenaciously or possessively.