Different Words

Question 1

We worked from dawn to dusk (=through the whole day while it is light).

Answer 1

Noun:
1 the time at the beginning of the day when light first appears SYN daybreak, → dusk
at dawn
The boats set off at dawn.
When dawn broke (=the first light of the day appeared), we were still 50 miles from Calcutta.
I was up at the crack of dawn (=very early in the morning) to get the plane.
We worked from dawn to dusk (=through the whole day while it is light).
the cold light of dawn

dawn2 ●○○ verb [intransitive]
1 if day or morning dawns, it begins
The morning dawned fresh and clear after the storm.
2 if a period of time or situation dawns, it begins
The age of Darwin had dawned.
3 if a feeling or idea dawns, you have it for the first time
It began to dawn that something was wrong.
→ dawn on somebody

Question 2

the dawn of civilization/time etc

Answer 2

the time when something began or first appeared
People have been falling in love since the dawn of time.
► see thesaurus at beginning
→ dawn

Question 3

I need to make a quick phone call.

Answer 3

Make a phone call