There is a definition of "hyponymy" in Wikipedia.
In linguistics, a hyponym (from Greek hupó, "under" and ónoma, "name") is a word or phrase whose semantic field is included within that of another word, its hyperonym or hypernym (from Greek hupér, "over" and ónoma, "name"). In simpler terms, a hyponym is in ...
Prologue (before the main event) - the Story - Epilogue (after the main event):
Dawn (before the main event) - Daylight/Daytime - Dusk (after the main event.)
Twilight come from Twilight = two + light (probably the light of the day (the sun) and the light of the night (the moon)
1. The light diffused by the reflection of the sun's rays from the ...