What are two examples of internal words?

It seems you're asking for examples of "internal words," which is a bit of a tricky concept. There isn't a standardized linguistic term like that. Here are two possibilities based on how you might be thinking of this:

1. Words internal to a phrase:

* "The" in "the big red ball." This word is part of the noun phrase, but doesn't have any independent meaning outside of it.

* "Not" in "I did not go." This is a negation word that only makes sense within the context of the sentence.

2. Words internal to a thought:

* "Beautiful" in "The sunset was so beautiful." This word expresses an internal emotion or perception, which isn't necessarily spoken out loud.

* "Fear" in "The darkness filled me with fear." This word is an internal state, not something physically existing.

Could you give me more context about what kind of "internal words" you're interested in? Knowing what you're looking for would help me provide more specific and accurate examples!