seize
seizing
seizure
select
selectability
selectable
selected
selection
selective
selectivity
  selector
selenium
self
self-act
self-acting
self-actuated
self-adapting
self-adaptive
self-adjusting
self-adjustment
self-aligning

    selector switch

     переключатель выбора (режимов работы станка)

     многопозиционный переключатель