This is the 453rd most frequent Finnish word.
alan
"Alan" in Finnish means "I begin" or "I start" (first person singular present tense of the verb "alkaa").
In this context, 'alan' refers to 'industry' or 'field', meaning the working sector.
Hän työskentelee IT-alan yrityksessä.
They work in an IT industry company.
Here, 'alalle' is a form of 'ala', indicating 'field/area', in the allative case, demonstrating direction towards an industry or domain.
Et kuulu tälle alalle.
You do not belong to this field.
Here, 'Alan' is the conjugated form of the verb 'alkaa' (to begin/start), in the first-person singular form.