This is the 4430th most frequent Dutch word.
celta
The Dutch word "celta" does not have a known definition; it may refer to "CELTA" (Cambridge English teaching qualification).
CELTA in this context refers to an internationally recognized teaching qualification.
Ik gebruik vaak mijn CELTA-certificaat om Engels te onderwijzen.
I often use my CELTA certificate to teach English.
In this case, CELTA describes a specific training program for language teachers.
De cursus CELTA was moeilijk, maar zeer leerzaam.
The CELTA course was difficult, but very educational.
Here, I note that the term 'celta' isn't native to Dutch and usually appears related to the English acronym.