What's the difference between acinetae and suctorial?

Acinetae

Definition:

(n. pl.) A group of suctorial Infusoria, which in the adult stage are stationary. See Suctoria.

Example Sentences:

Definition:

(a.) Adapted for sucking; living by sucking; as, the humming birds are suctorial birds.
(a.) Capable of adhering by suction; as, the suctorial fishes.

Example Sentences:

(1) Adult lampreys (Entosphenus tridentata) attached to the wall of an aquarium by their suctorial disc, exhibited a brief but intense suction increase following a vibratory stimulus initiated by a tap to the aquarium wall.
(2) However, there are numerous suctorial tentacles at the surface of the body, and the pellicle is characterized by close-set villus-like projections.
(3) Gibsonia gen. n. differs from all known genera of the family Lepocreadiidae by unusual body shape divided into 2 parts, suctorial formations, great number of glandular cells and a muscular bulge of the body sides; it differs from the closely related genus Lepidapedon by separate genital pores.