The plural form of power is powers.
The plural form of the noun 'energy' is energies. The countable noun 'energy' is a word for enthusiasm and determination. The noun 'energy' is an uncountable (mass) noun as a word for a form of power such as electricity, heat, or light; a word for a supply of physical power that you have for doing things that need physical effort.
"thermal energy" is a compound noun
The plural of compass is compasses.
Pelvimeters is the plural of pelvimeter
The plural for motion is motions.
An index (plural indices) is more commonly called a power.
The possessive form for the noun sea is sea's.Example: The sea's power should never be underestimated.
Mitochondrion, plural mitochondria. Power for the cell is also provided by the cytoplasm with glycolysis.
Grym, plural grymoedd Grym Magneteg - Magnetic Power
The plural form of the noun 'energy' is energies. The countable noun 'energy' is a word for enthusiasm and determination. The noun 'energy' is an uncountable (mass) noun as a word for a form of power such as electricity, heat, or light; a word for a supply of physical power that you have for doing things that need physical effort.
limits the executive power of the governor to implement policy
"thermal energy" is a compound noun
Recast the sentence, or risk losing clarity. Instead of "They took their power(s) of attorney(s) to the hospital," write "They each brought their power of attorney to the hospital" or "They took copies of their power of attorney to the hospital." Same problem arises with, for example, the title "Book of Mormon" and "Power of Love" You'd have to say "copies of the Book of Mormon" or "versions of Power of Love" to preserve your meaniing.
Plural Executive
The word power is a noun. The plural form is powers.
The plural of 'this' is 'these' and the plural of 'that' is 'those'.
Isthmi is plural. There are actually two plural forms. I will list them from singular to plural. Isthmus - Singular Isthmi - Plural Isthmuses - Plural