Was heißt »Hauptwort« auf Englisch?

Das Substantiv Hauptwort lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Deutsch/Englische Beispielübersetzungen

In der deutschen Sprache werden Hauptwörter immer groß geschrieben.: In German, nouns are always capitalised.
Im Portugiesischen ist jedes Hauptwort entweder männlich oder weiblich.: Every noun in Portuguese is either masculine or feminine.
Im Französischen richten sich Eigenschaftswörter in Zahl und Geschlecht nach dem Hauptwort, welches sie näher bestimmen.: In French, adjectives agree in gender and number with the noun they qualify.
Wie setzt man Hauptwörter in die Mehrzahl?: How do you form the plural of nouns?; How do you make nouns plural?
Autobusfahrkarte, Handtasche und Kinderspielplatz sind Beispiele zusammengesetzter Hauptwörter.: Bus ticket, handbag, and children's playground are examples of compound nouns.

With the first election of a woman into the seat of Chancellorship, the word "Bundeskanzlerin," as a feminine noun for the title, was voted Word of the Year in 2005 by the Academy of German Language.
This particle turns a noun into a verb.
"Apple" is a countable noun, so it makes grammatical sense to have five apples.
When writing for a German newspaper, every few sentences you should replace some grammatical case with a dative, or a noun with its English translation, to make your article linguistically more interesting.
German has a gender system. Every noun has a gender: masculine, feminine, or neuter.
In this case, the adjective goes before the noun.
This word is both a noun and a verb.
A noun can be singular or plural.
The Latin noun "hortus" belongs to the o-declension.
I know the sentence must start with a noun.
Studying a table of Russian paradigms, Mary unconsciously knitted her brows and scratched her head. She marvelled that most Russian six-year-olds master the noun declensions with little apparent effort.
This is an adjective, not a noun.
This noun is not declined.
This noun isn't declined.
We don't decline this noun.