Spitous vs Spinous - What's the difference?

As adjectives the difference between spitous and spinous

is that spitous is showing spite; spiteful while spinous is having many spines.

(en adjective)

(obsolete) Showing spite; spiteful.

(Webster 1913)

(en adjective)

Having many spines.

Spine-like; spiny.

Of a person, difficult to deal with, prickly.

Of a subject, providing many difficulties, thorny.