As a noun factor

is a doer, maker; a person who does things for another person or organization.

As a verb factor

is to find all the factors of (a number or other mathematical object) (the objects that divide it evenly).

As an adjective septillionfold is

by a multiple of one septillion; by a septillion times as much or as many.

As an adverb septillionfold is

by a factor of one septillion.

Thousandfold is a related term of septillionfold.

As adjectives the difference between thousandfold and septillionfold

is that thousandfold is multiplied by one thousand (1000), repeated a thousand times while septillionfold is (rare) by a multiple of one septillion; by a septillion times as much or as many.

As adverbs the difference between thousandfold and septillionfold

is that thousandfold is by a factor of a thousand while septillionfold is (rare) by a factor of one septillion.

Septillionfold is a related term of millionfold.

As adjectives the difference between millionfold and septillionfold

is that millionfold is a million times so; as, a millionfold dilution, a millionfold increase while septillionfold is by a multiple of one septillion; by a septillion times as much or as many.

As adverbs the difference between millionfold and septillionfold

is that millionfold is by a factor of a million while septillionfold is by a factor of one septillion.

Septillionfold is a related term of billionfold.

As adjectives the difference between billionfold and septillionfold

is that billionfold is a billion times so while septillionfold is by a multiple of one septillion; by a septillion times as much or as many.

As adverbs the difference between billionfold and septillionfold

is that billionfold is in a billionfold way; by a billion degrees; on a scale of a billion; as, to multiply something a billionfold, to magnify something a billionfold, something which is a billionfold heavier than something else while septillionfold is by a factor of one septillion.

Septillionfold is a related term of trillionfold.

As adjectives the difference between trillionfold and septillionfold

is that trillionfold is by a multiple of one trillion; by a trillion times as much or as many while septillionfold is by a multiple of one septillion; by a septillion times as much or as many.

As adverbs the difference between trillionfold and septillionfold

is that trillionfold is by a factor of one trillion while septillionfold is by a factor of one septillion.

Septillionfold is a related term of quadrillionfold.

In lang=en terms the difference between quadrillionfold and septillionfold

is that quadrillionfold is by a factor of one quadrillion while septillionfold is by a factor of one septillion.

As nouns the difference between hemoglobin and sulfhemoglobin

is that hemoglobin is the iron-containing substance in red blood cells that transports oxygen from the lungs to the rest of the body; it consists of a protein (globulin), and haem (a porphyrin ring with an atom of iron at its centre) while sulfhemoglobin is any of a group of derivatives of hemoglobin, often in the presence of ferrihemoglobin, that are incapable of transporting oxygen.

As a noun sulfhemoglobin is

(biochemistry) any of a group of derivatives of hemoglobin, often in the presence of ferrihemoglobin, that are incapable of transporting oxygen.

As nouns the difference between oxygen and sulfhemoglobin

is that oxygen is a chemical element (symbol o) with an atomic number of 8 and relative atomic mass of 159994 while sulfhemoglobin is (biochemistry) any of a group of derivatives of hemoglobin, often in the presence of ferrihemoglobin, that are incapable of transporting oxygen.

As a noun feet

is (foot).

As an adjective superextensile is

(biology) describing the feet of some molluscs that can be extended to form burrows.