Teddy boy vs tough guy

Teddy boy and tough guy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Teddy boy	Yes	No	No	No
tough guy	Yes	No	No	No

As nouns, tough guy is a hypernym of Teddy boy; that is, tough guy is a word with a broader meaning than Teddy boy:

Teddy boy: a tough youth of 1950's and 1960's wearing Edwardian style clothes
tough guy: someone who bullies weaker people

Other hypernyms of Teddy boy include plug-ugly.

Teddy boy (noun)	tough guy (noun)
a tough youth of 1950's and 1960's wearing Edwardian style clothes	someone who bullies weaker people