The term 'LIKE SOME FR. NOUNS' refers to French nouns that are either masculine or feminine. The crossword solutions for this term are MASC (4 letters) and FEM (3 letters). This is because in French, nouns are either masculine or feminine, and the gender of a noun must be known in order to use it correctly in a sentence. Knowing the gender of a noun is also important when using adjectives and articles with the noun.