noun
1.
Synonyms: essential 1, basic, element, fundamental, part and parcel
2.
rudiments plural
Synonyms: alphabet 2, ABC's, elements, fundamentals, grammar, principles
noun
1.
Synonyms: essential 1, basic, element, fundamental, part and parcel
2.
rudiments plural
Synonyms: alphabet 2, ABC's, elements, fundamentals, grammar, principles
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003