As a noun preview

is a foretaste of something.

As a verb preview

is to show or watch something, or part of it, before it is complete.

As an adjective previewable is

that can be previewed.

As an adjective ingressive

is going or directed inward, entering.

As a noun ingressive

is (phonetics) a speech sound in which the air stream is created by drawing air in through the mouth or nose.

As an adverb ingressively is

in an ingressive way.

As an adjective egressive

is going or directed outward.

As a noun egressive

is a speech sound in which the air stream is created by pushing air out through the mouth or nose.

As an adverb egressively is

in an egressive way.

As an adjective sugary

is of food, drink, etc, containing or covered with a large amount of sugar.

As an adverb sugarily is

in a sugary way.

As a noun substance

is physical matter; material.

As an adjective pointful is

having real substance; apposite, pertinent.

As adjectives the difference between apposite and pointful

is that apposite is appropriate, relevant, well-suited; fit while pointful is having real substance; apposite, pertinent.

As a noun apposite

is something that is apposite.

As adjectives the difference between pertinent and pointful

is that pertinent is important with regard to (a subject or matter); relevant while pointful is having real substance; apposite, pertinent.

As a noun point

is a discrete division of something.

As a verb point

is to extend the index finger in the direction of something in order to show where it is or to draw attention to it.

As an adjective pointful is

having real substance; apposite, pertinent.

As an adjective pointful

is having real substance; apposite, pertinent.

As an adverb pointfully is

in a pointful way.

As nouns the difference between player and racquetballer

is that player is one that plays while racquetballer is a player of racquetball.