The main difference between Forenoon and Afternoon is that the Forenoon is a part of the day between sunrise and noon and Afternoon is a time of the day between noon and evening.
Forenoon is the part of the day between sunrise and noon (e.g., “morning”).The term should not be confused with “fore noon” (two separate words), which is a translation of the Latin word ante meridiem (a.m.), meaning a time between 12:00 midnight and 12:00 midday.
Afternoon is the time of day from noon or lunchtime until evening. There is no exact definition of the time when afternoon ends and evening starts. (This is equally true for “evening” and “night”.) However afternoon is often taken to start directly after noon (12:00pm). Afternoon ends and evening starts at roughly 5pm or 6pm or maybe just before sunset. Afternoon is the time when the Sun is descending from its zenith in the sky to somewhat before its terminus in the westerly horizon. In human life, it occupies roughly the latter half of the standard working and school day. In literal terms, it refers to a time specifically after noon.
syn of morning: the part of the day between sunrise and noon.
The part of the day from noon or lunchtime until sunset, evening, or suppertime or 6pm.
The later part of anything, often with implications of decline.
A party or social event held in the afternoon.
In the afternoon.
clipping of good afternoon.
“the forenoon watch”
“the wind starts picking up in the forenoon”
the time from noon or lunchtime to evening
“I’ll be back at three in the afternoon”
“I telephoned this afternoon”
“she worked on Tuesday afternoons”
in the afternoon; every afternoon.
short for good afternoon