Example:
National Day is an important festival in every country.
National day? It is an important festival for every country.
Key words:
1, national
Nationals; Nationals; State-owned; Nationalist
Usage:
National is an adjective transformed from nation, which can be interpreted as "national, national, national" and "state-owned, national".
National is often used as an attribute in sentences, without comparative and superlative forms.
2. During the day
One day; During the day; Period; festival
During the day; daily
Usage:
The basic meaning of day is "a day", which refers to a period of 24 hours long and is a countable noun. It can also refer to "daytime, daytime", which can be used as both countable and uncountable nouns, usually without articles.
Day can also mean "working day", which means working hours within 24 hours a day. This is a countable noun.