The difference between Scoundrel and Tinker

Scoundrel as a noun:

A mean, worthless fellow; a rascal; a villain; a person without honour or virtue.

Tinker as a noun:

An itinerant tinsmith and mender of household utensils made of metal.

Tinker as a noun (dated, chiefly, British, and, Irish, offensive):

A member of the Irish Traveller community. A gypsy.

Tinker as a noun (usually with "little"):

A mischievous person, especially a playful, impish youngster.

Tinker as a noun:

Someone who repairs, or attempts repair, on anything mechanical, or who invents such devices; one who tinkers; a tinkerer.

Tinker as a noun:

The act of repair or invention.

Tinker as a noun (military, obsolete):

A hand mortar.

Tinker as a noun:

Any of various fish: the , the silverside, the skate, or a young mackerel about two years old.

Tinker as a noun:

A bird, the razor-billed auk.

Tinker as a verb (intransitive):

To fiddle with something in an attempt to fix, mend or improve it, especially in an experimental or unskilled manner.

Tinker as a verb (intransitive):

To work as a tinker.