Upswing is an antonym of downslide.

As nouns the difference between upswing and downslide

is that upswing is an upward swing while downslide is a slide downward; a worsening.

As a noun mold

is a hollow form or matrix for shaping a fluid or plastic substance or mold can be (senseid)a natural substance in the form of a woolly or furry growth of tiny fungi that appears when organic material lies for a long time exposed to (usually warm and moist) air or mold can be loose friable soil, rich in humus and fit for planting.

As a verb mold

is to shape in or on a mold or mold can be to cause to become moldy; to cause mold to grow upon or mold can be to cover with mold or soil.

As an adjective moldlike is

resembling mold (fungal growth) or some aspect of it.

Centreless is an alternative form of centerless.

As adjectives the difference between centreless and centerless

is that centreless is while centerless is without a center.

Adenylpyrophosphatase is a synonym of atpase.

As a noun atpase is

(biochemistry) a type of enzyme which works to convert adenosine triphosphate (atp) into adenosine diphosphate (adp) and a free phosphate ion, thereby releasing energy to be used in cellular activity.

As nouns the difference between tension and tonicity

is that tension is tension while tonicity is (medicine) the normal presence of tone or tension in a muscle or organ; tonus.

As an adjective muscle

is muscled, muscly, muscular.

As a verb muscle

is .

As a noun tonicity is

(medicine) the normal presence of tone or tension in a muscle or organ; tonus.

As nouns the difference between organ and tonicity

is that organ is organ while tonicity is (medicine) the normal presence of tone or tension in a muscle or organ; tonus.

As nouns the difference between solution and tonicity

is that solution is a homogeneous mixture, which may be liquid, gas or solid, formed by dissolving one or more substances while tonicity is (medicine) the normal presence of tone or tension in a muscle or organ; tonus.

As nouns the difference between membrane and tonicity

is that membrane is membrane while tonicity is (medicine) the normal presence of tone or tension in a muscle or organ; tonus.

Hypertonic is a related term of tonicity.

As an adjective hypertonic

is (of a solution) having a greater osmotic pressure than another.

As a noun tonicity is

(medicine) the normal presence of tone or tension in a muscle or organ; tonus.