The difference between Comb and Crest

Comb as a noun:

A toothed implement for grooming the hair or (formerly) for keeping it in place.

Comb as a noun:

A machine used in separating choice cotton fibers from worsted cloth fibers.

Comb as a noun:

A fleshy growth on the top of the head of some birds and reptiles; crest.

Comb as a noun:

A structure of hexagon cells made by bees for storing honey; honeycomb.

Comb as a noun:

An old English measure of corn equal to the half quarter.

Comb as a noun:

The top part of a gun's stock.

Comb as a noun:

The toothed plate at the top and bottom of an escalator that prevents objects getting trapped between the moving stairs and fixed landings.

Comb as a noun (music):

The main body of a harmonica containing the air chambers and to which the reed plates are attached.

Comb as a noun:

A former, commonly cone-shaped, used in hat manufacturing for hardening soft fibre.

Comb as a noun:

A toothed tool used for chasing screws on work in a lathe; a chaser.

Comb as a noun:

The notched scale of a wire micrometer.

Comb as a noun:

The collector of an electrical machine, usually resembling a comb.

Comb as a noun:

One of a pair of peculiar organs on the base of the abdomen in scorpions.

Comb as a noun:

The curling crest of a wave; a comber.

Comb as a noun:

A toothed plate used for creating wells in agar gels for electrophoresis.

Comb as a noun (weaving):

A toothed wooden pick used to push the weft thread tightly against the previous pass of thread to create a tight weave.

Comb as a noun:

A connected and reduced curve with irreducible components consisting of a smooth subcurve (called the handle) and one or more additional irreducible components (called teeth) that each intersect the handle in a single point that is unequal to the unique point of intersection for any of the other teeth.

Comb as a verb (transitive, especially of hair or fur):

To groom with a toothed implement; chiefly with a comb.

Comb as a verb (transitive):

To separate choice cotton fibers from worsted cloth fibers.

Comb as a verb (transitive):

To search thoroughly as if raking over an area with a comb.

Comb as a verb (nautical, intransitive):

To roll over, as the top or crest of a wave; to break with a white foam, as waves.

Comb as a noun (abbreviation):

Combination.

Comb as a noun:

Crest as a noun:

A tuft, or other natural ornament, growing on an animal's head, for example the comb of a cockerel, the swelling on the head of a snake, the lengthened feathers of the crown or nape of bird, etc.

Crest as a noun:

The plume of feathers, or other decoration, worn on or displayed on a helmet; the distinctive ornament of a helmet.

Crest as a noun (heraldry):

A bearing worn, not upon the shield, but usually on a helmet above it, sometimes (as for clerics) separately above the shield or separately as a mark for plate, in letterheads, and the like.

Crest as a noun:

The upper curve of a horse's neck.

Crest as a noun:

The ridge or top of a wave.

Crest as a noun:

The summit of a hill or mountain ridge.A helmet with a crest.

Crest as a noun:

The helm or head, as typical of a high spirit; pride; courage.

Crest as a noun:

The ornamental finishing which surmounts the ridge of a roof, canopy, etc.

Crest as a noun:

The top line of a slope or embankment.

Crest as a noun (anatomy):

A ridge along the surface of a bone.

Crest as a noun (informal):

A design or logo, especially one of an institution, association or high-class family.

Crest as a noun:

Any of several birds in the family Regulidae, including the goldcrests and firecrests.

Crest as a verb:

Particularly with reference to waves, to reach a peak.

Crest as a verb:

To furnish with, or surmount as, a crest; to serve as a crest for.

Crest as a verb:

To mark with lines or streaks like waving plumes.