'Answer' vs 'respond to'

What is the difference (if any) between:

Next week, a computer trainer will be here to answer any questions you may have.

and

Next week, (...) to respond to any questions (...).

Solution 1:

respond to your question,answer your question

to respond to questions,to answer questions

to respond to any question,to answer any question

The three ngrams shown as an introduction make it clear that "respond" is rarely used in comparison to "answer".

"Respond", in its primary sense, means rather "to reply" and not specifically "to give an answer", OALD, 1; however, it is used as a synonym for "answer", albeit it is a quite formal one. Here is another point of view that insists on this difference.

Example (LPH's)

• They'd been waiting for explanations from the office and no one responded for two weeks, but a secretary finally did; however that was to tell them no one could answer their request as there was not any personel in possession of sufficient knowledge to do that.