As a noun glacier

is (geology) a large body of ice which flows under its own mass, usually downhill.

As an adjective proglacial is

situated in front of a glacier or ice sheet (and formed from its meltwaters).

As nouns the difference between mineral and baileychlore

is that mineral is mineral while baileychlore is a yellow-green mineral of the chlorite group with the mineral formula (zn,fe,al,mg)₆(si,al)₄o₁₀(oh)₈.

As nouns the difference between chlorite and baileychlore

is that chlorite is while baileychlore is a yellow-green mineral of the chlorite group with the mineral formula (zn,fe,al,mg)₆(si,al)₄o₁₀(oh)₈.

Several is a alternative form of severall.

As determiners the difference between severall and several

is that severall is obsolete spelling of several while several is separate, distinct; particular.

As an adverb several is

by itself; severally.

As a noun several is

an area of land in private ownership (as opposed to common land).

As adjectives the difference between mounted and premounted

is that mounted is on horseback while premounted is mounted in advance.

As a verb mounted

is (mount).

In linguistics|lang=en terms the difference between nucleus and prenuclear

is that nucleus is (linguistics) the central part of a syllable, most commonly a vowel while prenuclear is (linguistics) before the nucleus.

As a noun nucleus

is the core, central part (of something), round which others are assembled.

As an adjective prenuclear is

occurring before the start of the nuclear age.

As a noun orbit

is orbit (path of one object around another object).

As an adjective preorbital is

occurring before an orbit is established.

As a noun spill

is game, activity.

As an adjective prespill is

before the occurrence of a spill.

As adjectives the difference between strained and prestrained

is that strained is forced through a strainer while prestrained is strained in advance.

As a verb strained

is (strain).

In botany|lang=en terms the difference between plant and preflower

is that plant is (botany) an organism of the kingdom plantae''; now specifically, a living organism of the ''embryophyta'' (land plants) or of the ''chlorophyta'' (green algae), a eukaryote that includes double-membraned chloroplasts in its cells containing chlorophyll ''a'' and ''b , or any organism closely related to such an organism while preflower is (botany) a growth in the internode of a plant that develops into a flower.

As nouns the difference between plant and preflower

is that plant is an organism that is not an animal, especially an organism capable of photosynthesis typically a small or herbaceous organism of this kind, rather than a tree while preflower is (botany) a growth in the internode of a plant that develops into a flower.

As a verb plant

is to place (a seed or plant) in soil or other substrate in order that it may live and grow.