Words like "very" afford another example. We can say "Perry is very fast", but not "Perry very won the race". These words can modify adjectives but not verbs. On the other hand, there are words like "here" and "there" that cannot modify adjectives. We can say "The sock looks good there" but not "It is a there beautiful sock". The fact that many adverbs can be used in more than one of these functions can confuse the issue, and it may seem like splitting hairs to say that a single adverb is really two or more words that serve different functions. However, this distinction can be useful, especially when considering adverbs like "naturally" that have different meanings in their different functions. Rodney Huddleston distinguishes between a "word" and a "lexicogrammatical-word".