Are there any specific words for the first events and first things [closed]

Yes, there are many different forms of expressions that indicate a particular event or thing that is the first of its kind.

You can simply use prefix to form specific words for the first events and first things

proto-

original; primitive:

first; anterior; relating to a precursor

such as protohuman, protolanguage, protohistory, protomartyr, prototype, etc.

ur-

primitive; original; earliest

such as urtext, urheimat, urlanguage, urmonotheismus, urreligion, etc.

Or to describe it with an adjective, like maiden or prime as suggested by Kris

maiden

being or involving the first attempt or act of its kind: the ship's maiden voyage.

prime

of first importance; main: her prime concern is the well-being of the patient.

inaugural

marking the beginning of an institution, activity, or period of office: his inaugural concert as music director.

initial

existing or occurring at the beginning: our initial impression was favorable.

Or use a noun:

inception

the establishment or starting point of an institution or activity: she has been on the board since its inception two years ago.

prototype

a first, typical or preliminary model of something, esp. a machine, from which other forms are developed or copied: the firm is testing a prototype of the weapon | the prototype of all careerists is Judas.

archetype

an original that has been imitated: the archetype of faith is Abraham.

There are some very specific ones for particular cases, like primigravida which is a woman who is pregnant for the first time (by extension, a woman who has been pregnant once will still be called a primigravida until such a time as she becomes a secundigravida).

Aboriginal refers to the first people in a place (though people tend to assume things were in an unchanging state until they arrived on the scene - settlers to an area may call those they find aboriginal even if that group had in fact also displaced an earlier group).

Virgin is used in a variety of contexts, metaphorically. It most often means that something has not had its first case of something else (it comes up a lot in magical texts), but there are a few cases where it means the first of something such as the virgin pressing of oil.

Related to virgin, maiden is used of voyages of a ship, though some other uses differ - a maiden race is a race by a horse that has not yet won a race, not necessarily it's first.

Of course, there's always first itself. In particular, "first fruits" referring to the first produce of a harvest, and to festivals that celebrate them.

And many first things are harbingers of what is to come. This refers not to their being the first specifically, but of the first grey hairs, first frost of winter, etc. being harbingers of age, impending winter etc.