Here's why:
* It modifies verbs, adjectives, or other adverbs. It tells us how something is done, to what extent, or how it compares to something else.
* It can be used to express similarity, agreement, or repetition.
Examples:
* Verb modification: "He was tired, and likewise, his dog seemed weary."
* Adjective modification: "The weather was very hot, and likewise, the beach was crowded."
* Adverb modification: "She walked slowly, and likewise, her shadow moved languidly across the ground."
Let me know if you have any other words you'd like to analyze!