This is the 11047th most frequent Russian word.
гидом
"Гидом" means "as a guide" in English.
In this sentence, 'гидом' means a tour guide, referring to the profession of the person leading the excursion.
Мы отправились на экскурсию с профессиональным гидом.
We went on a tour with a professional guide.
Here, 'гидом' is used in a simile to describe someone trying to appear as a guide.
Он надел шляпу, чтобы выглядеть, как гидом.
He put on a hat to look like a guide.
In this sentence, 'гидом' refers to the role of guiding oneself with the help of a map.