Cases of word usage

1) causing a strong emotional response (emotive)

2) the use of figurative language to produce an imaginative or emotional response or to make descriptions stronger (imagery)

3) a response to earlier action or activity; opposition to progress or change; (an instance of) a change in one substance caused by another (reaction)

4) wanted; received with, giving, pleasure; allowed with pleasure to do something; a greeting, response by word or action, when a person arrives, when an offer is received etc (welcome)