Simple Gerund Phrases vs Complex Gerund Phrases

As it was said in the older thread, both versions are grammatically correct. The difference between the two sentences is that the first uses -ing forms (=gerunds) "detecting" and "creating", whereas the second uses nouns "detection" and "creation." Thus the second sentence does not use gerunds.

Hi
Could you explain the difference b/w complex gerund phrase and a simple gerund ??


Thanks!!

Hi, Gerunds are -Ing form of verb used as noun.
1) Tracking satellites accurately is important -------> it is used here as a noun, no one is tracking satellites......Simple Gerund (noun outside verb inside)
2) the accurate tracking of satellite is important------>it is complex gerund defining what type of tracking "accurate tracking is important" (Noun Through and Through). it is often preceded by articles (a,an or the) or adjectives and mostly Object is put into an Of-Prepositional phrase.
Remember the Important rule: Simple gerunds are NEVER parallel to complex gerunds and action nouns.
however, complex gerunds can be parallel to action noun.