typing vs touch typing

typing and touch typing both are nouns.

Word	Noun	Adjective	Verb	Adverb
typing	Yes	No	No	No
touch typing	Yes	No	No	No

As nouns, touch typing is a hyponym of typing; that is, touch typing is a word with a more specific, narrower meaning than typing:

typing: writing done with a typewriter
touch typing: typewriting in which the fingers are trained to hit particular keys; typist can read and type at the same time

Other hyponyms of typing include double-spacing, single-spacing, triple-spacing, touch system.

typing (noun)	touch typing (noun)
writing done with a typewriter	typewriting in which the fingers are trained to hit particular keys; typist can read and type at the same time