Adjectives must agree with the noun they modify in both gender and number. En röd bil (a red car).
Unlike English's "a" or "an," Swedish uses en for common nouns (e.g., en bil — a car) and ett for neuter nouns (e.g., ett hus — a house). Essentials of Swedish Grammar
Swedish nouns are categorized into two grammatical genders: ( en words) and neuter ( ett words). Approximately 80% of nouns fall into the common category, but the distinction remains crucial as it dictates the form of articles, adjectives, and plurals. Adjectives must agree with the noun they modify
One of the most accessible parts of Swedish grammar is its verb system. Verbs do not change based on the person (I, you, he/she, they). For example, the verb "to be" ( vara ) in the present tense is always är regardless of the subject. Verbs are generally grouped into four categories: Swedish nouns are categorized into two grammatical genders: