Hashtag: A "#" symbol followed by a word or phrase without spaces, used on social media to classify and group content around a specific topic.

Trend: A topic or issue that generates widespread interest on social media in a specific period, and reflects an increase in interaction and searches for it.

Nature and objectives:

Hashtag:
Nature: A classification tool.
Objectives: Organizing content, increasing reach, encouraging interaction.
Example: #Children's_Day, used to group posts about Children's Day celebrations on social media platforms.

Trend:
Nature: A state of collective interest in a specific topic.
Objectives: Identifying trends, attracting attention.
Example: The trend for #World_Cup, where the audience interacts greatly with match events and results during the tournament period.

Continuity and impact:

Hashtag:
Continuity: Permanent or temporary.
Impact: Limited or related to a specific topic.
Example: #Learn_Programming, used throughout the year to publish educational content about programming.

Trend:
Continuity: Temporary and short-term.
Impact: Large and affects public opinion.
Example: #Eid_Al-Adha trend that tops social media during the Eid period.

Identification and appearance:

Hashtag: Anyone can create it and it appears in search results.
Example: #Fashion_2024, used to promote new fashion trends.

Trend: Requires broad interaction and appears in trending topics lists.
Example: #New_iPhone_launch trend that attracts the attention of millions of users when new versions of the phone are launched.

Types of hashtags and trends:
Hashtags:
General: such as #Love, used to express feelings.
Specific: such as #Winter_Running_Challenge, associated with a sports event or challenge.
Branded: such as #Nike, used to enhance brand awareness.

Trends:
Major events: such as #US_elections, reflects important political events.
Social issues: such as #Women's_rights, attracts public interest in social issues.
Challenges: Like #ColdWaterBucketChallenge, where people participate in fun challenges.

Benefit:
Hashtags: Choose hashtags that align with your goals, use 3-5 of them in posts.

Example: Use #FallSales in a promotional campaign to attract customers.

Trends: Follow trends and incorporate them into your content in a convenient and quick way.

Example: Participate in the #EarthDay trend to raise public awareness of the importance of the environment.

The relationship between them: A hashtag can become part of a trend when used frequently, making it reflect collective interest in a specific topic.