The Repetition of a consonant sound at the beginning is known as -

♦ Alliteration:
- The Repetition of a consonant at the beginning of two or more words or stressed syllables is called Alliteration.
- যখন পরস্পর সম্পর্কযুক্ত বা পাশাপাশি স্থাপিত শব্দের শুরুতে একই বর্ণ বা একই ধরনের উচ্চারণ থাকে তাকে অনুপ্রাস (Alliteration) বলে।

• Examples of Alliteration:
- 'Puffs, powders, patches, Bibles, billet-doux'. (Here 'p' has been repeated thrice and 'b' twice).
- Fair is foul, and foul is fair.
- A big bully beats a baby boy.
- She sells seashells by the seashore.

• অন্যদিকে, 
• Assonance: 
- The Repetition of a vowel sound in nearby words (without the recurrence of consonant sounds which would make a rhyme) is called assonance.
• Catharsis:
- The purgation or purification of pity and fear in tragedies.
• Connotation:
- The indirect meaning of a word.

Source: ABC of English Literarture Dr M Mafizar Rahman