Cultivator of two main variations
Dragged teeth also called shanks that pierce the soil.
Rotary motion of disks or teeth. Examples are: Power tiller / Rotary tiller / Rototiller / Bedtiller / Mulch tiller / Rotavator
Cultipacker
Chisel plow
Harrow e.g. Spike harrow, Drag harrow, Disk harrow
Plow or plough {various specialized types