we/you/they start: nous commençons - vous commencez - ils/elles commencent
The plural of "princess" in French is "princesses."
you say nephew in French le neveu, plural: les neveux
To say male, the French say, "L'homme" (singular) or "Les Hommes" (plural).
les Comores (plural)
The plural of "blanc" in French is "blancs" when referring to masculine nouns, and "blanches" when referring to feminine nouns.
des feutres (singular: un feutre)
The only correct plural for French is French. "Frenches", as you say, or 'Frenchies' is a derogatory slang term.
Anchovies are "des anchois" (masc., usually plural) in French.
Anchovies are "des anchois" (masc., usually plural) in French.
'en vacances' (always plural)
Tonneaux (plural), tonneau (singular)
A pencil case is 'une trousse', then the plural is 'des trousses'.