noun

la semana

week

Es un periodo de siete días que empieza normalmente en lunes y termina en domingo.

Word: semana

Meaning:
"Semana" is a Spanish noun that means "week" in English. It refers to a period of seven days, typically used to measure time.

Explanation:

A "semana" is composed of seven days, starting from Monday and ending on Sunday in most Spanish-speaking countries, although culturally the first day of the week may vary.
It is commonly used to talk about plans, schedules, appointments, or time duration.

Parts:
The word "semana" does not break down into meaningful smaller lexical parts in Spanish—it’s a root word on its own.

Synonyms:
There aren’t direct synonyms for "semana" as it is a specific time unit, but words related to time periods include:

quincena (a fortnight, 15 days)
mes (month)
período / periodo (period)

Antonyms:
As a specific unit of time, "semana" does not have exact antonyms. You could contrast it with:

día (day), which is a shorter time frame than a week
mes or año (month or year), which are longer time frames, but these are not true antonyms, just different units of time.

In summary, "semana" refers to a seven-day time frame, equivalent to "week" in English. It is a fundamental unit of measuring time in everyday life.