While being a life long user of the English Language. Having written many presentations for public consumption. Also the editor (especially tense) for NIH grants, and various other IT and Academic technical publications. 

I do not recall the term, in English proper verb.  There are adverbs to install additional fortitude to a verb. Not a proper verb.  Some Germanic languages do use a variety of verb types, German, Dutch, Flemish, Danish, languages for an example.

The conjugation of verbs is a "whole other country" that have been removed in US English. I can not speak to the other English Flavors, GB, CA, CA-NF, CA-BC, NZ, AU, SA, ... idk how many there are? 

Verbs in Deutsch are quite complex and multi-leveled.  In German class, verb conjugation is/was called "diktat". 
You may see a pattern. It was about as difficult as memorizing the Periodic Table. 

Present - singular & plural
Compount Past - singular & plural
Past Perfect- "" ""
Future Tense - "" ""
Furture Perfect - "" ""

There are three command (imperative) forms.
The subjunctive is a mood, not a tense. also Singular & Plural.

The Subjunctive II is based on the simple past tense (Imperfekt).  Singular & Plural.

I got this from my German 2 textbook "Spreken und Lesen" Speaking & Reading.  

I hope I didn't go too far, but there are "Parts" of the German language being sloshed into common English. Uber, Verboten, are a few examples.  Super - Higher & Forbidden.