Pains and Throb

Pains noun - An effortful attempt to attain a goal.

Throb and pains are semantically related. in bother topic. In some cases you can use "Throb" instead the word "Pains" as a noun or a verb, when it comes to topics like physical suffering.

Throb noun - A rhythmic expanding and contracting.

Pains and throb are semantically related. Sometimes you can replace term "Pains" with "Throb", this nouns are similar.