E-cigarettes and vapes are electronic devices that heat a liquid, often containing nicotine, flavorings, and other chemicals, to create an inhalable aerosol or vapor. Unlike traditional cigarettes, they do not burn tobacco. E￾cigarettes are typically cigarette-shaped, while vapes come in various forms, including pens and box mods, offering customizable experiences with varying nicotine levels and flavors.

Edge computing is the practice of processing data near the logical extremes (edge) of the network (i.e., near the source where data is generated). It depends on distributed computing device nodes for data processing and analysis instead of a centralized data-processing warehouse in a cloud computing environment.

Edtech or educational technology comprises the use of elements like hardware, software, and services, such as online educational services, to facilitate and enhance learning. Major end-users that use these technologies for teaching and training purposes include businesses and academic organizations. The global Edtech market is growing as a result of the expansion of these end-user facilities along with the rising adoption of cutting-edge educational technologies.

Elderberry is the edible black or red berry-like drupe of any of a genus Sambucus of shrubs or trees of the honeysuckle family bearing flat clusters of small white or pink flowers. This berry is a key component of various products, including jams, wines, and medicines. Elderberries are often used in traditional healing practices and are known for their antioxidant and anti-inflammatory properties.

Electric motorcycles are plug-in electric vehicles with one motor. Electric motorcycles are distinguished from electric scooters. Electric motorcycles have higher torque and offer higher range when compared to electric scooters.

An electric satellite propulsion system employs electrical energy to change the velocity of a spacecraft. Most all-electric propulsion satellites function by electrically ejecting propellant at high speed. Hybrid propulsion satellites involve both electrical and chemical propulsion technologies. Unlike conventional chemical propulsion satellite, electric propulsion satellite employs electrical energy streams to change the velocity of a spacecraft.

Batteries are one of the most important components of electric vehicles (EVs). EVs require batteries for both propulsion and starting lighting, and ignition (SLI). Batteries play a major role in the adoption of EVs due to their importance in determining the driving range, the cost of ownership, and the performance of the EVs.

An Electric Vehicle (EV) charging station is a facility or piece of equipment that provides electrical power to recharge the batteries of EVs. These stations are basically of two types, AC charging stations and DC charging stations.

Electricity trading enhances grid stability, encourages competition, reduces prices, and makes renewable energy integration easier in global energy markets. Electricity trading refers to the buying and selling of electricity among participants in the electricity industry, such as independent power producers, open-access consumers, and municipality-owned utilities. Various forms of electricity trading are possible depending on market design, ranging from short-term trading to long-term trading. Electricity can be traded on exchanges, over the counter (OTC) with an intermediary, and directly OTC with no intermediary.

Electronic waste (e-waste) is any discarded electrical or electronic equipment. This applies to electrical or electronic equipment, which is either still functional or damaged and has been discarded as garbage. Electronic waste recycling is the process of extracting valuable materials, which can be reused in a new electronic appliance, after shredding the e-waste into tiny pieces. Some of these materials contain cadmium, lead, mercury, chromium, and other materials.