Question

is the group of words in bold a phrase or a clause? usually the result of earthquakes or volcanic activity, tsunamis are enormous ocean waves that can devastate docked ships; meanwhile, ships at sea may not even detect the massive waves.

Explanation:

First, identify the bolded group of words: "ocean waves that can devastate docked ships". A phrase is a group of words without a subject - verb relationship, while a clause has a subject and a verb. In this group, "that can devastate docked ships" is a relative clause (has subject "that" and verb "can devastate"), but the main part "ocean waves" plus the relative clause makes it a clause? Wait, no, let's re - examine. Wait, the bolded part: Wait, maybe I misread. Wait, the bolded words: "ocean waves that can devastate docked ships" – actually, let's check the structure. A clause must have a subject and a predicate (verb). The group "ocean waves that can devastate docked ships" has a subject ("ocean waves") and a relative clause ("that can devastate docked ships") which acts as an adjective clause. Wait, but maybe the bolded part is "ocean waves" plus the clause? Wait, no, let's look at the original sentence: "Usually the result of earthquakes or volcanic activity, tsunamis are enormous ocean waves that can devastate docked ships; meanwhile, ships at sea may not even detect the massive waves." The bolded group is "ocean waves that can devastate docked ships". Let's analyze: "ocean waves" is a noun phrase, and "that can devastate docked ships" is a subordinate clause (relative clause) modifying "ocean waves". So the entire bolded group is a clause because it contains a subject ("ocean waves" is the main subject, and "that" is the subject of the relative clause) and a verb ("can devastate"). Wait, no, a clause has a subject and a finite verb. The relative clause "that can devastate docked ships" has subject "that" and verb "can devastate", and it is attached to the noun phrase "ocean waves". So the entire bolded group is a clause (a complex noun phrase with a relative clause, but the presence of a subject - verb combination in the relative clause makes the whole a clause? Wait, maybe the key is: a phrase is a group of words without a subject - verb pair, a clause has a subject - verb pair. In "ocean waves that can devastate docked ships", the "that can devastate docked ships" has subject "that" and verb "can devastate", so the bolded group contains a clause (the relative clause) and a noun phrase, but as a whole, since it has a subject - verb relationship (the relative clause is part of it), it is a clause. Wait, maybe I made a mistake. Let's recall: A phrase is a group of words functioning as a unit, without a subject - verb combination. A clause has a subject and a predicate (verb). The bolded group: "ocean waves" (noun phrase) + "that can devastate docked ships" (relative clause, which has subject "that" and verb "can devastate"). So the entire bolded group is a clause because it contains a clause (the relative clause) and the noun it modifies. Alternatively, maybe the bolded part is considered a clause because it has a subject ("ocean waves") and the verb - containing relative clause. So the answer is a clause.

Answer:

The group of words in bold is a clause.