 Accidents, which can come and go from a substance, are inseparable from that substance, and are caused by it (EpiMeta 2.56 {42}; LongMeta XII.25 {1532–3}), but are not themselves a part of the substance (LongAnima II.4; Tahāfut I.6.216 {359}). They do not have existence in an absolute sense, but only relationally (LongMeta XII.3 {1415}; EpiMeta 1.28 {12}), and indeed Ibn Rushd generally does not refer to them as a form (ṣūra), preferring to reserve that term for the substantial form.