For a learner, part of speech is a bucket, not a linguistic analysis. The classic “parts of speech” set is the natural fit, and it lands on a clean 10, discounting ‘particle’.

┌─────┬─────────────────────────────────────┬────────┐
│ #   │ category                            │ tag    │
├─────┼─────────────────────────────────────┼────────┤
│ 1   │ noun                                │ n      │
├─────┼─────────────────────────────────────┼────────┤
│ 2   │ verb (incl. modal/aux/linking)      │ v      │
├─────┼─────────────────────────────────────┼────────┤
│ 3   │ adjective                           │ adj    │
├─────┼─────────────────────────────────────┼────────┤
│ 4   │ adverb                              │ adv    │
├─────┼─────────────────────────────────────┼────────┤
│ 5   │ pronoun                             │ n-p    │
├─────┼─────────────────────────────────────┼────────┤
│ 6   │ preposition (incl. infinitive "to") │ prep   │
├─────┼─────────────────────────────────────┼────────┤
│ 7   │ conjunction                         │ conj   │
├─────┼─────────────────────────────────────┼────────┤
│ 8   │ determiner (incl. articles)         │ det    │
├─────┼─────────────────────────────────────┼────────┤
│ 9   │ number (incl. ordinal)              │ num    │
├─────┼─────────────────────────────────────┼────────┤
│ 10  │ interjection (exclamation)          │ interj │
└─────┴─────────────────────────────────────┴────────┘

This is just the traditional eight parts of speech + det + num. The big four (n/v/adj/adv) soak up ~95% of the language, and everything exotic collapses into a bucket. Meaning, jump can be a noun or a verb; but we do not care what kind of noun or verb it is, only which one it is.