ascender

is likely misspelled.

has no English definition.

As a noun ascender

is the portion of a lowercase letter that extends above the midline of a typeface.

As a noun ascender is

(typography) the portion of a lowercase letter that extends above the midline of a typeface.

In climbing|lang=en terms the difference between belay and ascender

is that belay is (climbing) a location at which a climber stops and builds an anchor with which to secure his/or her partner while ascender is (climbing) a mechanical device used for ascending on a rope.

As nouns the difference between belay and ascender

is that belay is (climbing) the securing of a rope to a rock or other projection while ascender is (typography) the portion of a lowercase letter that extends above the midline of a typeface.

As a verb belay

is (obsolete) to surround; environ; inclose.

As a verb ascended

is (ascend).

As a noun ascender is

(typography) the portion of a lowercase letter that extends above the midline of a typeface.

As nouns the difference between taxonomy and ascender

is that taxonomy is the science or the technique used to make a classification while ascender is (typography) the portion of a lowercase letter that extends above the midline of a typeface.