Try get a better grasp on how the word is used in the pali Sutta;
Intention (pali Cetana), I tell you, is kamma. Intending, one does kamma by way of body, speech, & intellect.
"And what is the diversity in kamma? There is kamma to be experienced in hell, kamma to be experienced in the realm of common animals, kamma to be experienced in the realm of the hungry shades, kamma to be experienced in the human world, kamma to be experienced in the world of the devas. This is called the diversity in kamma.
"And what is the result of kamma? The result of kamma is of three sorts, I tell you: that which arises right here & now, that which arises later [in this lifetime], and that which arises following that. This is called the result of kamma.
And what are fabrications? These six classes of intention (cetana)
Here Sutta method of expression is that what is Called Kamma is also called Intention and what is called intention shares meaning also with word Fabrications sankhara.
Reasoning is that they are comorbid, conjoined coexistant and tied up. It's somewhat like the elements of both mass and speed are known & inferable from the one notion of 'a moving object'.
When you have a moving body, you know there is speed element and a mass element. Here they arent the same but one can't take speed out of the moving object as to separare mass from speed but they are different elements with clear difference in how we think about when seeing them with intellect.
Mind is different to a moving object, for one It arises as one thing ceases as another
Contact, reverends, is one end. The origin of contact is the second end. The cessation of contact is the middle.
“The past, reverends, is one end. The future is the second end. The present is the middle. And craving is the seamstress …
When further it is expressed;
"And what is the cause by which kamma comes into play? Contact is the cause by which kamma comes into play.
Contact is also a cause for dependent origination of other elements one can think about as conjoined with sankhara or think about in general, it's dependent origination all classes of the perceived & conceived. https://www.accesstoinsight.org/tipitaka/an/an06/an06.063.than.html#part-5
What one experience that one knows, what one knows that one cognizes, what one cognizes that one perceives, what one perceives that one senses, what one senses that is brought about [fabricated, sankhata],what is fabricated is conceived, what is conceived is inacted [verb conceiving, ie past conceiving is done, performed, inacted; is, will be or has been inacted]; what is inacted (kamma) is intended(cetana)
Is my method of expressing it.