Philosophical primitive terms [what are]
In order of usage frequency
Total: 55.

215 pp1d01 sive, seu, aut
161 pp1d02 res
153 pp1d01 se^alius
149 pp1d01 potentia^actu, potestas, posse NOT posse, possibile NOT agere
126 pp1d08 quatenus
119 pp1d05 afficere, affectio  NOT  affectus
112 pp1d03 esse, dari
110 pp1d01 causa^effectus
108 pp2d03 mens 
107 pp1d01 natura
85 pp1d01 existere, existentia
76 pp2a1.4 corpus humanus
75 pp1d01 intelligo, est NOT intellegere NOT esse, dari
71 pp2p18 imaginare, -atio
69 pp1d01 concipere, conceptus
67 pp1a03 necessarius (pleonastic)  NOT  liber^necessarius  NOT  contingens^necessarius
67 pp1a04 cognoscere, cognitio  NOT  cogitatio
63 pp1d04 intelligere, intellectus
61 pp3p06 conatus
43 pp1d01 involvere
42 pp2p44 ratiocinare, ratio
37 pp2p17 contemplare, -atio
34 pp1d02 cogitare, cogitatio NOT  cognitio
32 pp1p05 considerare, consideratio
28 pp1d04 percipere, perceptio
27 pp1a06 veritas
23 pp1d06 exprimere
21 pp3p27c3 appetere appetitus
18 pp4d01 utile, utilitas
17 pp1p30 objectus, objectivus
16 pp3post02 imago, imagines NOT imaginare, maginatio
15 pp1a06 convenire
15 pp1p33 ordo et connexio
15 pp2p05 forma
13 pp1d07 operare
11 pp2a1.3 animus
10 pp3de44 immodica immoderata
10 pp4p67 liberus^servus
9 pp1p17 lex, legis
9 pp2a1.4 sentire
8 pp1p16c2 per accidens
8 pp1p31 volere, voluntas
7 pp1p06 producere, productio
7 pp2p44c2 species (aeternitatis)
6 pp1p14c2 extensio
6 pp1p16c1 (causa) efficiens
5 pp1p09 realis, realitas
5 pp1p30 comprehendere, -sio
3 pp2post5 vestigium
3 pp2p38c notio, notiones
2 pp1d02 terminare
2 pp2p21 unita  NOT (corpora) unita
2 pp3p03 (causa) proxima
1 pp1p31 (natura) naturans^naturata