A fricative is a consonant sound that is created by constricting the vocal tract, causing friction as the air passes through it. The nine English fricative sounds (the v soundf soundvoiced th soundunvoiced th soundz sounds soundzh soundsh sound, and h sound) often do not correlate exactly with any particular sound in an English as a Second Language/English as a Foreign Language student's native language. This causes substitutions to occur, and those substitutions often have significant differences from the intended English sound.
A consonant is a speech sound that is articulated with complete or partial closure of the vocal tract. Examples are [p], pronounced with the lips; [t], pronounced with the front of the tongue; [k], etc..Contrasting with consonants are vowels.

thumbs up please!