Think of it this way:
Your brain is a massive relational database.  There are tables for words, tables for meanings, tables for context, etc, etc...  And there are temporary tables for each, as well as limited space for long term storage tables for each.  Entries in the temp tables get flushed if they're not used much, and only after they've been used from the temporary tables numerous times do they justify getting moved into the permanent tables.
To make this data useful, there are links between these entries.   The links are very small and easy, and don't require the work of entering and storing those words, meanings and context from scratch.
So adding new links between existing long term data entries is much easier, faster and more efficient than creating completely new entries and having them slowly move from temporary to long term storage.
When a brand is using a well known word, that's what they are doing, just creating a link between existing long term entries in the brain.  Much more efficient, which means much quicker recall, less training (dollars spent) of the public mindset is involved.
That's EXACTLY what major brands know and understand.  That's why popular and meaningful one-worders will always be more valuable.