fossil

As a verb petrify

is to harden organic matter by permeating with water and depositing dissolved minerals.

As a noun fossil is

fossil.

As nouns the difference between remain and fossil

is that remain is state of remaining; stay while fossil is fossil.

As a verb remain

is to stay behind while others withdraw; to be left after others have been removed or destroyed; to be left after a number or quantity has been subtracted or cut off; to be left as not included or comprised.

As nouns the difference between remnant and fossil

is that remnant is the small portion remaining of a larger thing or group while fossil is fossil.

As an adjective remnant

is (archaic) remaining; still left.

As a noun fossil

is fossil.

As a verb rock is

(rycka).

As an adjective stubborn

is refusing to move or to change one's opinion; obstinate; firmly resisting.

As a noun fossil is

fossil.

As a noun fossil

is fossil.

As an adjective petrified is

extremely afraid.

As a verb petrified is

(petrify).

As nouns the difference between debate and fossil

is that debate is (obsolete) strife, discord while fossil is fossil.

As a verb debate

is (ambitransitive) to participate in a debate; to dispute, argue, especially in a public arena.

As nouns the difference between mums and fossil

is that mums is a common name for the flower chrysanthemum while fossil is fossil.

As nouns the difference between thermal and fossil

is that thermal is (meteorology) a column of rising air in the lower atmosphere created by uneven heating of earth's surface while fossil is fossil.

As an adjective thermal

is pertaining to heat or temperature.

As nouns the difference between fossil and fogey

is that fossil is while fogey is .