The word usage examples above have been gathered from various sources to reflect current and historical usage. They do not represent the opinions of YourDictionary.com.
It's very easy to mix up the words silicone vs. silicon since the only visible difference is that one of the words has an "e" at the end. Even though they're spelled so similarly, these two words represent two very different substances. Silicon is a naturally occurring chemical element. Silicone is a manmade substance that includes silicon, as well as other elements. They both offer many practical applications.
Second language acquisition theory seeks to quantify how and by what processes individuals acquire a second language. The predominant theory of second language acquisition was developed by the University of Southern California’s Steven Krashen. Krashen is a specialist in language development and acquisition, and his influential theory is widely accepted in the language learning community.