In English vocabulary, what is the correct word for a short phrase that expresses the aim or belief of a group, political party, or organisation?

Introduction / Context:
This question checks your command of English vocabulary, particularly words used in politics, advertising, and organisational communication. Groups and parties often use short phrases to express their aims, values, or campaign messages. Choosing the correct word helps you read newspapers, speeches, and exam passages more accurately, and it often appears in competitive examinations that test verbal ability.

Given Data / Assumptions:

• The question focuses on a phrase that expresses the aim of a group or party.
• The phrase is usually short, memorable, and easy to repeat.
• It is used in public communication, such as rallies, advertisements, or banners.
• We need a single English word that captures this idea.

Concept / Approach:
The word that best fits this description is "slogan". A slogan is a short, catchy phrase used by political parties, companies, or social movements to communicate their main message or aim in a memorable way. For example, election campaigns often revolve around a few powerful slogans that represent promises or core values. Other words in the options refer to different concepts. An epitaph is an inscription on a tombstone, a legend is a traditional story or explanatory note on a map, and a dialogue is a conversation between two or more people. None of these fit the idea of a brief public phrase that promotes or expresses the aim of a group or party.

Step-by-Step Solution:
Step 1: Focus on the key idea "a phrase expressing the aim of a group or party". This points to political campaigns or organisational branding.Step 2: Recall common usage from media, where parties and companies use short lines to attract attention, such as well known political or commercial slogans.Step 3: Match this meaning with vocabulary. The word "slogan" is widely used for such phrases.Step 4: Compare with the other options. An epitaph is connected to graves, a legend to stories or map notes, and a dialogue to conversations, so they do not match the definition.Step 5: Conclude that "slogan" is the correct answer.

Verification / Alternative check:
You can verify the meaning by checking any standard dictionary, which will define slogan as a short and striking or memorable phrase used in advertising or political campaigns. Newspapers also report on new slogans launched by parties before elections. None of these sources use epitaph, legend, or dialogue to refer to campaign catchphrases. This confirms that slogan is the precise term for a phrase expressing the aim of a group or party.

Why Other Options Are Wrong:
Option B, epitaph, refers to words written in memory of a person, usually on a tombstone, and is associated with death, not with organisational aims. Option C, legend, usually means a traditional story or the explanatory key on a map or diagram. Option D, dialogue, is a conversation between two or more people. While groups may hold dialogues, the question asks specifically for a phrase expressing an aim, which is not a dialogue.

Common Pitfalls:
Students sometimes confuse slogan with motto. A motto is also a short statement of beliefs or principles, often used by schools or families, and it is usually more permanent. A slogan is often linked to campaigns and can change frequently. In many exam questions, the context of politics and parties points more clearly to slogan. To answer correctly, pay attention to context words like party, campaign, election, and advertisement, which usually indicate that slogan is the right choice.

Final Answer:
The correct word for a short phrase expressing the aim of a group or party is "Slogan".