User blog comment:Martialmaniac/Induction type Manipulation/@comment-32818639-20180922050742

I still think the two terms are synonymous. Usually, when Nen is further explained, Togashi doesn't use multiple terms for the same Nen thing, but the Manipulation divisions may have been deduced by Kurapika with his own nomenclatures and other characters may know it by another names (adding realism, or unnecessary complexity). I think sometimes variations of terms are used, but only as a writing tool.

Another possibility, if the translations are faithful, is that the author decided to change the term. The later term seems much more accurate with the description. When the next volume is released we'll see if he rewrote the term.