Vaisesika Sūtra 1.1.7

उत्क्षेपणमवक्षेपणमाकुञ्चनं प्रसारणं गमनमिति कर्माणि ॥७॥

utkṣepaṇam avakṣepaṇam ākuñcanaṁ prasāraṇaṁ gamanam iti karmāṇi ॥7॥

[उत्क्षेपणम् (utkṣepaṇam) - upward movement; अवक्षेपणम् (avakṣepaṇam) - downward movement; आकुञ्चनम् (ākuñcanam) - contraction; प्रसारणम् (prasāraṇam) - extension; गमनम् (gamanam) - locomotion/movement; इति (iti) - thus; कर्माणि (karmāṇi) - are actions;]

Ascending, descending, contracting, spreading, and moving are 'karmas' i.e. actions.