Lactobacteria reside in the intestines and are known as "friendly" or "beneficial" bacteria. They are essential not just for health, but for life itself. They are vital for the assimilation of vitamins, proteins, fats, carbohydrates, and the manufacture of B-Vitamins, Vitamin K, and assorted amino acids.

Lactobacillus is a type of bacteria. There are lots of different species of lactobacillus. These are "friendly" bacteria that normally live in our digestive, urinary, and genital systems without causing disease. Lactobacillus is also in some fermented foods like yogurt and in dietary supplements.

Lactobacillus is used for treating and preventing diarrhea, including infectious types such as rotaviral diarrhea in children and traveler's diarrhea. It is also used to prevent and treat diarrhea associated with using antibiotics.

Source: medicine

No, not the same

Lactobacteria reside in the intestines and are known as "friendly" or "beneficial" bacteria. They are essential not just for health, but for life itself.
A Gram-positive rod-shaped bacterium that produces lacticacid is lactobacillus.

No