Teasel

I wondered if the name, Teasel is related to the name, Thistle - they sound alike & the plants have some similarities.

Its seeds are favoured by goldfinches and some people cultivate them in their gardens to attract the birds.

The head of the plant used to be used to "tease" or card wool, to raise and smooth the nap of the fabric. It has been called "card teasel" or "card thistle" also.

References:
herbs2000.com
Ohio Perennial and Biennial Weed Guide
Wikipedia