I am a violinist. I love it because it is smallest and highest-pitched instrument in the family 
I play the guitar.
Oh wow. that is amazing. I love the way the  sound is projected either acoustically, using a hollow wooden or plastic and wood box or through electrical amplifier and a speaker 
Yes I have been playing all my life.
How do you play it. Is it the regular way of strumming or plucking the strings with the fingers, thumb or fingernails?
I use my thumbs.
Bass guitar
The bass guitar (or simply bass) is a plucked string instrument similar in appearance and construction to an electric or an acoustic guitar, except with a longer neck and scale length, and typically four to six strings or courses.
The four-string bass is usually tuned the same as the double bass, which corresponds to pitches one octave lower than the four lowest-pitched strings of a guitar (E, A, D, and G). It is played primarily with the fingers or thumb
Guitar
The guitar is a fretted musical instrument that usually has six strings. It is typically played with both hands by strumming or plucking the strings with either a guitar pick or the finger(s)/fingernails of one hand, while simultaneously fretting (pressing the strings against the frets) with the fingers of the other hand. The sound of the vibrating strings is projected either acoustically, by means of the hollow chamber of the guitar (for an acoustic guitar), or through an electrical amplifier and a speaker.
The guitar is a