Examples of words that do not change from singular to plural are:
aircraft
deer
elk
fish
moose
offspring
salmon
spacecraft
trout
you
your
yours
There are a number of nouns that are included in many lists of nouns with the same singular and plural form. However, most of those are uncountable nouns, words that have no singular or have no plural form (such as luggage or barracks),; or mass nouns that are words for substances or aggregate nouns (such as oxygen or luggage). Some lists include binary nouns, words for things made up of two parts that make up the whole (such as pants or scissors). These are not true singular and plural forms.
Note: The noun 'fish' is a singular, uncountable noun as a word for a food substance.
The plural form of the noun fish as a word for individual creatures is fish or fishes, both are correct plural forms.
To change lean into a word that means “Narrow road.” The answer is Lane.
amercone
the root word 'alter' means to change something from its original form.
It means to change in shape.
the root word for morph is morph.from Greek: morphe = form
The word root that means change is "morph."
metamorphosis
The Latin word for change is "mutatio."
Acceleration means change in speed over time.
The word 'evolve' means change.
To change lean into a word that means “Narrow road.” The answer is Lane.
metamorphosis
Effect
Metamophisis
Revise
revolutionary
Upheaval.