Chemicals or substances having a $pH$ higher than 7 are said to be basic;
higher $pH$ means higher basicity.
Applicable units are those of quantitykind:Basicity
https://en.wikipedia.org/wiki/PH
https://en.wikipedia.org/wiki/Base_(chemistry)
https://iupac.org/wp-content/uploads/2019/05/IUPAC-GB3-2012-2ndPrinting-PDFsearchable.pdf
Chemicals or substances having a pH higher than 7 are said to be basic; higher pH means higher basicity.