Concerning definitions: "a connector end" vs "a connector between 2 ends" vs "connection" vs "connect" in various technologies
Internal Structure Compartment vs Composite Structure Diagram Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:02: UML 101 for model-based systems engineering with SysML Slide kind hybrid diagram UML Class Diagram UML Composite Structure Diagram
A ConnectorEnd is an endpoint of a Connector, which attaches the Connector to a ConnectableElement. Source Unified Modeling Language 2.5.1
BindingConnector::1_compatible_types The two ends of a binding connector shall have either the same type or types that are compatible so that equality of their values can be defined. Source OMG Systems Modeling Language (SysML) 1.6
Figure 8-6: Abstract syntax extensions for SysML connector ends Gallery Tutorial TRAIL: The SysML-1.6 Hybrid SUV sample and specification diagrams in MagicDraw/Cameo (with annotations) [UNDERGOING UPDATE to SysML1.7] Section Section: SysML-1.6 specification diagrams: 08 Blocks Slide kind UML Profile Diagram